app.js

	Ti.UI.backgroundColor = 'white';
	var win = Ti.UI.createWindow({
		exitOnClose : true,
		layout : 'vertical',
		backgroundColor : 'red'
	});

	var picker = Ti.UI.createPicker({
		top : 50,
		//color : 'green',
		//backgroundColor : 'green' // why???
	});

	var data = [];
	data[0] = Ti.UI.createPickerRow({
		title : 'Bananas'
	});
	data[1] = Ti.UI.createPickerRow({
		title : 'Strawberries'
	});
	data[2] = Ti.UI.createPickerRow({
		title : 'Mangos'
	});
	data[3] = Ti.UI.createPickerRow({
		title : 'Grapes'
	});

	picker.add(data);
	picker.selectionIndicator = true;

	win.add(picker);
	win.open();

	// must be after picker has been displayed
	picker.setSelectedRow(0, 2, false);
	// select Mangos

color.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <color name="light_steel_blue">#B0C4DE</color>
    <color name="pale_turquoise">#AFEEEE</color>
    <color name="greenYellow">#ADFF2F</color>
    <color name="light_blue">#ADD8E6</color>
    <color name="dark_gray">#A9A9A9</color>
 
</resources>

styles_example.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
	<style name="Theme.Example" parent="Theme.AppCompat">
		<!-- Customize your theme here. -->
		<item name="android:spinnerDropDownItemStyle">@style/spinner</item>
		<item name="android:windowActionBar">false</item>
		<item name="android:windowNoTitle">true</item>
		<item name="windowActionBar">false</item>
		<item name="windowNoTitle">true</item>

	</style>
</style>
<style name="spinner" parent="Widget.AppCompat.Light.DropDownItem.Spinner">
	<item name="android:background">@color/light_blue</item>
</style>
</resources>

tiapp.xml

<android xmlns:android="http://schemas.android.com/apk/res/android">
        <manifest>
            <application android:theme="@style/Theme.Example"/>
            
            <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="28"/>
       
        </manifest>
    </android>