Random material color

array.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <!-- google's material design colours from
    http://www.google.com/design/spec/style/color.html#color-ui-color-palette -->
    <array name="mdcolor_50">
        <item type="color" name="md_red_50">#FFEBEE</item>
        <item type="color" name="md_pink_50">#FCE4EC</item>
        <item type="color" name="md_purple_50">#F3E5F5</item>
        <item type="color" name="md_deep_purple_50">#EDE7F6</item>
        <item type="color" name="md_indigo_50">#E8EAF6</item>
        <item type="color" name="md_blue_50">#E3F2FD</item>
        <item type="color" name="md_light_blue_50">#E1F5FE</item>
        <item type="color" name="md_cyan_50">#E0F7FA</item>
        <item type="color" name="md_teal_50">#E0F2F1</item>
        <item type="color" name="md_green_50">#E8F5E9</item>
        <item type="color" name="md_light_green_50">#F1F8E9</item>
        <item type="color" name="md_lime_50">#F9FBE7</item>
        <item type="color" name="md_yellow_50">#FFFDE7</item>
        <item type="color" name="md_amber_50">#FFF8E1</item>
        <item type="color" name="md_orange_50">#FFF3E0</item>
        <item type="color" name="md_deep_orange_50">#FBE9A7</item>
        <item type="color" name="md_brown_50">#EFEBE9</item>
        <item type="color" name="md_grey_50">#FAFAFA</item>
        <item type="color" name="md_blue_grey_50">#ECEFF1</item>
    </array>
    <array name="mdcolor_100">
        <item type="color" name="md_red_100">#FFCDD2</item>
        <item type="color" name="md_pink_100">#F8BBD0</item>
        <item type="color" name="md_purple_100">#E1BEE7</item>
        <item type="color" name="md_deep_purple_100">#D1C4E9</item>
        <item type="color" name="md_indigo_100">#C5CAE9</item>
        <item type="color" name="md_blue_100">#BBDEFB</item>
        <item type="color" name="md_light_blue_100">#B3E5FC</item>
        <item type="color" name="md_cyan_100">#B2EBF2</item>
        <item type="color" name="md_teal_100">#B2DFDB</item>
        <item type="color" name="md_green_100">#C8E6C9</item>
        <item type="color" name="md_light_green_100">#DCEDC8</item>
        <item type="color" name="md_lime_100">#F0F4C3</item>
        <item type="color" name="md_yellow_100">#FFF9C4</item>
        <item type="color" name="md_amber_100">#FFECB3</item>
        <item type="color" name="md_orange_100">#FFE0B2</item>
        <item type="color" name="md_deep_orange_100">#FFCCBC</item>
        <item type="color" name="md_brown_100">#D7CCC8</item>
        <item type="color" name="md_grey_100">#F5F5F5</item>
        <item type="color" name="md_blue_grey_100">#CFD8DC</item>
    </array>
    <array name="mdcolor_200">
        <item type="color" name="md_red_200">#EF9A9A</item>
        <item type="color" name="md_pink_200">#F48FB1</item>
        <item type="color" name="md_purple_200">#CE93D8</item>
        <item type="color" name="md_deep_purple_200">#B39DDB</item>
        <item type="color" name="md_indigo_200">#9FA8DA</item>
        <item type="color" name="md_blue_200">#90CAF9</item>
        <item type="color" name="md_light_blue_200">#81D4fA</item>
        <item type="color" name="md_cyan_200">#80DEEA</item>
        <item type="color" name="md_teal_200">#80CBC4</item>
        <item type="color" name="md_green_200">#A5D6A7</item>
        <item type="color" name="md_light_green_200">#C5E1A5</item>
        <item type="color" name="md_lime_200">#E6EE9C</item>
        <item type="color" name="md_yellow_200">#FFF590</item>
        <item type="color" name="md_amber_200">#FFE082</item>
        <item type="color" name="md_orange_200">#FFCC80</item>
        <item type="color" name="md_deep_orange_200">#FFAB91</item>
        <item type="color" name="md_brown_200">#BCAAA4</item>
        <item type="color" name="md_grey_200">#EEEEEE</item>
        <item type="color" name="md_blue_grey_200">#B0BBC5</item>
    </array>
    <array name="mdcolor_300">
        <item type="color" name="md_red_300">#E57373</item>
        <item type="color" name="md_pink_300">#F06292</item>
        <item type="color" name="md_purple_300">#BA68C8</item>
        <item type="color" name="md_deep_purple_300">#9575CD</item>
        <item type="color" name="md_indigo_300">#7986CB</item>
        <item type="color" name="md_blue_300">#64B5F6</item>
        <item type="color" name="md_light_blue_300">#4fC3F7</item>
        <item type="color" name="md_cyan_300">#4DD0E1</item>
        <item type="color" name="md_teal_300">#4DB6AC</item>
        <item type="color" name="md_green_300">#81C784</item>
        <item type="color" name="md_light_green_300">#AED581</item>
        <item type="color" name="md_lime_300">#DCE775</item>
        <item type="color" name="md_yellow_300">#FFF176</item>
        <item type="color" name="md_amber_300">#FFD54F</item>
        <item type="color" name="md_orange_300">#FFB74D</item>
        <item type="color" name="md_deep_orange_300">#FF8A65</item>
        <item type="color" name="md_brown_300">#A1887F</item>
        <item type="color" name="md_grey_300">#E0E0E0</item>
        <item type="color" name="md_blue_grey_300">#90A4AE</item>
    </array>
    <array name="mdcolor_400">
        <item type="color" name="md_red_400">#EF5350</item>
        <item type="color" name="md_pink_400">#EC407A</item>
        <item type="color" name="md_purple_400">#AB47BC</item>
        <item type="color" name="md_deep_purple_400">#7E57C2</item>
        <item type="color" name="md_indigo_400">#5C6BC0</item>
        <item type="color" name="md_blue_400">#42A5F5</item>
        <item type="color" name="md_light_blue_400">#29B6FC</item>
        <item type="color" name="md_cyan_400">#26C6DA</item>
        <item type="color" name="md_teal_400">#26A69A</item>
        <item type="color" name="md_green_400">#66BB6A</item>
        <item type="color" name="md_light_green_400">#9CCC65</item>
        <item type="color" name="md_lime_400">#D4E157</item>
        <item type="color" name="md_yellow_400">#FFEE58</item>
        <item type="color" name="md_amber_400">#FFCA28</item>
        <item type="color" name="md_orange_400">#FFA726</item>
        <item type="color" name="md_deep_orange_400">#FF7043</item>
        <item type="color" name="md_brown_400">#8D6E63</item>
        <item type="color" name="md_grey_400">#BDBDBD</item>
        <item type="color" name="md_blue_grey_400">#78909C</item>
    </array>
    <array name="mdcolor_500">
        <item type="color" name="md_red_500">#F44336</item>
        <item type="color" name="md_pink_500">#E91E63</item>
        <item type="color" name="md_purple_500">#9C27B0</item>
        <item type="color" name="md_deep_purple_500">#673AB7</item>
        <item type="color" name="md_indigo_500">#3F51B5</item>
        <item type="color" name="md_blue_500">#2196F3</item>
        <item type="color" name="md_light_blue_500">#03A9F4</item>
        <item type="color" name="md_cyan_500">#00BCD4</item>
        <item type="color" name="md_teal_500">#009688</item>
        <item type="color" name="md_green_500">#4CAF50</item>
        <item type="color" name="md_light_green_500">#8BC34A</item>
        <item type="color" name="md_lime_500">#CDDC39</item>
        <item type="color" name="md_yellow_500">#FFEB3B</item>
        <item type="color" name="md_amber_500">#FFC107</item>
        <item type="color" name="md_orange_500">#FF9800</item>
        <item type="color" name="md_deep_orange_500">#FF5722</item>
        <item type="color" name="md_brown_500">#795548</item>
        <item type="color" name="md_grey_500">#9E9E9E</item>
        <item type="color" name="md_blue_grey_500">#607D8B</item>
    </array>
    <array name="mdcolor_600">
        <item type="color" name="md_red_600">#E53935</item>
        <item type="color" name="md_pink_600">#D81B60</item>
        <item type="color" name="md_purple_600">#8E24AA</item>
        <item type="color" name="md_deep_purple_600">#5E35B1</item>
        <item type="color" name="md_indigo_600">#3949AB</item>
        <item type="color" name="md_blue_600">#1E88E5</item>
        <item type="color" name="md_light_blue_600">#039BE5</item>
        <item type="color" name="md_cyan_600">#00ACC1</item>
        <item type="color" name="md_teal_600">#00897B</item>
        <item type="color" name="md_green_600">#43A047</item>
        <item type="color" name="md_light_green_600">#7CB342</item>
        <item type="color" name="md_lime_600">#C0CA33</item>
        <item type="color" name="md_yellow_600">#FDD835</item>
        <item type="color" name="md_amber_600">#FFB300</item>
        <item type="color" name="md_orange_600">#FB8C00</item>
        <item type="color" name="md_deep_orange_600">#F4511E</item>
        <item type="color" name="md_brown_600">#6D4C41</item>
        <item type="color" name="md_grey_600">#757575</item>
        <item type="color" name="md_blue_grey_600">#546E7A</item>
    </array>
    <array name="mdcolor_700">
        <item type="color" name="md_red_700">#D32F2F</item>
        <item type="color" name="md_pink_700">#C2185B</item>
        <item type="color" name="md_purple_700">#7B1FA2</item>
        <item type="color" name="md_deep_purple_700">#512DA8</item>
        <item type="color" name="md_indigo_700">#303F9F</item>
        <item type="color" name="md_blue_700">#1976D2</item>
        <item type="color" name="md_light_blue_700">#0288D1</item>
        <item type="color" name="md_cyan_700">#0097A7</item>
        <item type="color" name="md_teal_700">#00796B</item>
        <item type="color" name="md_green_700">#388E3C</item>
        <item type="color" name="md_light_green_700">#689F38</item>
        <item type="color" name="md_lime_700">#A4B42B</item>
        <item type="color" name="md_yellow_700">#FBC02D</item>
        <item type="color" name="md_amber_700">#FFA000</item>
        <item type="color" name="md_orange_700">#F57C00</item>
        <item type="color" name="md_deep_orange_700">#E64A19</item>
        <item type="color" name="md_brown_700">#5D4037</item>
        <item type="color" name="md_grey_700">#616161</item>
        <item type="color" name="md_blue_grey_700">#455A64</item>
    </array>
    <array name="mdcolor_800">
        <item type="color" name="md_red_800">#C62828</item>
        <item type="color" name="md_pink_800">#AD1457</item>
        <item type="color" name="md_purple_800">#6A1B9A</item>
        <item type="color" name="md_deep_purple_800">#4527A0</item>
        <item type="color" name="md_indigo_800">#283593</item>
        <item type="color" name="md_blue_800">#1565C0</item>
        <item type="color" name="md_light_blue_800">#0277BD</item>
        <item type="color" name="md_cyan_800">#00838F</item>
        <item type="color" name="md_teal_800">#00695C</item>
        <item type="color" name="md_green_800">#2E7D32</item>
        <item type="color" name="md_light_green_800">#558B2F</item>
        <item type="color" name="md_lime_800">#9E9D24</item>
        <item type="color" name="md_yellow_800">#F9A825</item>
        <item type="color" name="md_amber_800">#FF8F00</item>
        <item type="color" name="md_orange_800">#EF6C00</item>
        <item type="color" name="md_deep_orange_800">#D84315</item>
        <item type="color" name="md_brown_800">#4E342E</item>
        <item type="color" name="md_grey_800">#424242</item>
        <item type="color" name="md_blue_grey_800">#37474F</item>
    </array>
    <array name="mdcolor_900">
        <item type="color" name="md_red_900">#B71C1C</item>
        <item type="color" name="md_pink_900">#880E4F</item>
        <item type="color" name="md_purple_900">#4A148C</item>
        <item type="color" name="md_deep_purple_900">#311B92</item>
        <item type="color" name="md_indigo_900">#1A237E</item>
        <item type="color" name="md_blue_900">#0D47A1</item>
        <item type="color" name="md_light_blue_900">#01579B</item>
        <item type="color" name="md_cyan_900">#006064</item>
        <item type="color" name="md_teal_900">#004D40</item>
        <item type="color" name="md_green_900">#1B5E20</item>
        <item type="color" name="md_light_green_900">#33691E</item>
        <item type="color" name="md_lime_900">#827717</item>
        <item type="color" name="md_yellow_900">#F57F17</item>
        <item type="color" name="md_amber_900">#FF6F00</item>
        <item type="color" name="md_orange_900">#E65100</item>
        <item type="color" name="md_deep_orange_900">#BF360C</item>
        <item type="color" name="md_brown_900">#3E2723</item>
        <item type="color" name="md_grey_900">#212121</item>
        <item type="color" name="md_blue_grey_900">#263238</item>
    </array>
    <array name="mdcolor_1000">
        <item type="color" name="md_black_1000">#000000</item>
        <item type="color" name="md_white_1000">#ffffff</item>
    </array>
    <array name="mdcolor_A100">
        <item type="color" name="md_red_A100">#FF8A80</item>
        <item type="color" name="md_pink_A100">#FF80AB</item>
        <item type="color" name="md_purple_A100">#EA80FC</item>
        <item type="color" name="md_deep_purple_A100">#B388FF</item>
        <item type="color" name="md_indigo_A100">#8C9EFF</item>
        <item type="color" name="md_blue_A100">#82B1FF</item>
        <item type="color" name="md_light_blue_A100">#80D8FF</item>
        <item type="color" name="md_cyan_A100">#84FFFF</item>
        <item type="color" name="md_teal_A100">#A7FFEB</item>
        <item type="color" name="md_green_A100">#B9F6CA</item>
        <item type="color" name="md_light_green_A100">#CCFF90</item>
        <item type="color" name="md_lime_A100">#F4FF81</item>
        <item type="color" name="md_yellow_A100">#FFFF82</item>
        <item type="color" name="md_amber_A100">#FFE57F</item>
        <item type="color" name="md_orange_A100">#FFD180</item>
        <item type="color" name="md_deep_orange_A100">#FF9E80</item>
    </array>
    <array name="mdcolor_A200">
        <item type="color" name="md_red_A200">#FF5252</item>
        <item type="color" name="md_pink_A200">#FF4081</item>
        <item type="color" name="md_purple_A200">#E040FB</item>
        <item type="color" name="md_deep_purple_A200">#7C4DFF</item>
        <item type="color" name="md_indigo_A200">#536DFE</item>
        <item type="color" name="md_blue_A200">#448AFF</item>
        <item type="color" name="md_light_blue_A200">#40C4FF</item>
        <item type="color" name="md_cyan_A200">#18FFFF</item>
        <item type="color" name="md_teal_A200">#64FFDA</item>
        <item type="color" name="md_green_A200">#69F0AE</item>
        <item type="color" name="md_light_green_A200">#B2FF59</item>
        <item type="color" name="md_lime_A200">#EEFF41</item>
        <item type="color" name="md_yellow_A200">#FFFF00</item>
        <item type="color" name="md_amber_A200">#FFD740</item>
        <item type="color" name="md_orange_A200">#FFAB40</item>
        <item type="color" name="md_deep_orange_A200">#FF6E40</item>
    </array>
    <array name="mdcolor_A400">
        <item type="color" name="md_red_A400">#FF1744</item>
        <item type="color" name="md_pink_A400">#F50057</item>
        <item type="color" name="md_purple_A400">#D500F9</item>
        <item type="color" name="md_deep_purple_A400">#651FFF</item>
        <item type="color" name="md_indigo_A400">#3D5AFE</item>
        <item type="color" name="md_blue_A400">#2979FF</item>
        <item type="color" name="md_light_blue_A400">#00B0FF</item>
        <item type="color" name="md_cyan_A400">#00E5FF</item>
        <item type="color" name="md_teal_A400">#1DE9B6</item>
        <item type="color" name="md_green_A400">#00E676</item>
        <item type="color" name="md_light_green_A400">#76FF03</item>
        <item type="color" name="md_lime_A400">#C6FF00</item>
        <item type="color" name="md_yellow_A400">#FFEA00</item>
        <item type="color" name="md_amber_A400">#FFC400</item>
        <item type="color" name="md_orange_A400">#FF9100</item>
        <item type="color" name="md_deep_orange_A400">#FF3D00</item>
    </array>
    <array name="mdcolor_A700">
        <item type="color" name="md_red_A700">#D50000</item>
        <item type="color" name="md_pink_A700">#C51162</item>
        <item type="color" name="md_purple_A700">#AA00FF</item>
        <item type="color" name="md_deep_purple_A700">#6200EA</item>
        <item type="color" name="md_indigo_A700">#304FFE</item>
        <item type="color" name="md_blue_A700">#2962FF</item>
        <item type="color" name="md_light_blue_A700">#0091EA</item>
        <item type="color" name="md_cyan_A700">#00B8D4</item>
        <item type="color" name="md_teal_A700">#00BFA5</item>
        <item type="color" name="md_green_A700">#00C853</item>
        <item type="color" name="md_light_green_A700">#64DD17</item>
        <item type="color" name="md_lime_A700">#AEEA00</item>
        <item type="color" name="md_yellow_A700">#FFD600</item>
        <item type="color" name="md_amber_A700">#FFAB00</item>
        <item type="color" name="md_orange_A700">#FF6D00</item>
        <item type="color" name="md_deep_orange_A700">#DD2600</item>
    </array>
</resources>

MyFragment.kt

class MyFragment : Fragment() {
   private fun randomMaterialColor(typeColor: String): Int {
      var returnColor = Color.GRAY
      val arrayId = resources.getIdentifier("mdcolor_$typeColor", "array", activity!!.packageName)

      if (arrayId != 0) {
          val colors = resources.obtainTypedArray(arrayId)
          val index = (Math.random() * colors.length()).toInt()
          returnColor = colors.getColor(index, Color.GRAY)
          colors.recycle()
      }
      return returnColor
  } 
}