Trying to set Colours from code but need something better than the few that unity provide and dont wanna mess around with colour values for ages? Colors is your friend!!!

Colors.cs

using UnityEngine;

public class Colors 
{
    // NOTE: The follwing color names come from the CSS3 specification, Section 4.3 Extended Color Keywords
    // http://www.w3.org/TR/css3-color/#svg-color

    public static readonly Color AliceBlue = new Color32(240,248,255,255);
    public static readonly Color AntiqueWhite = new Color32(250,235,215,255);
    public static readonly Color Aqua= new Color32(0,255,255,255);
    public static readonly Color Aquamarine = new Color32(127,255,212,255);
    public static readonly Color Azure = new Color32(240,255,255,255);
    public static readonly Color Beige = new Color32(245,245,220,255);
    public static readonly Color Bisque = new Color32(255,228,196,255);
    public static readonly Color Black = new Color32(0,0,0,255);
    public static readonly Color BlanchedAlmond = new Color32(255,235,205,255);
    public static readonly Color Blue = new Color32(0,0,255,255);
    public static readonly Color BlueViolet = new Color32(138,43,226,255);
    public static readonly Color Brown = new Color32(165,42,42,255);
    public static readonly Color Burlywood = new Color32(222,184,135,255);
    public static readonly Color CadetBlue = new Color32(95,158,160,255);
    public static readonly Color Chartreuse = new Color32(127,255,0,255);
    public static readonly Color Chocolate = new Color32(210,105,30,255);
    public static readonly Color Coral = new Color32(255,127,80,255);
    public static readonly Color CornflowerBlue = new Color32(100,149,237,255);
    public static readonly Color Cornsilk = new Color32(255,248,220,255);
    public static readonly Color Crimson = new Color32(220,20,60,255);
    public static readonly Color Cyan = new Color32(0,255,255,255);
    public static readonly Color DarkBlue = new Color32(0,0,139,255);
    public static readonly Color DarkCyan = new Color32(0,139,139,255);
    public static readonly Color DarkGoldenrod = new Color32(184,134,11,255);
    public static readonly Color DarkGray = new Color32(169,169,169,255);
    public static readonly Color DarkGreen = new Color32(0,100,0,255);
    public static readonly Color DarkKhaki = new Color32(189,183,107,255);
    public static readonly Color DarkMagenta = new Color32(139,0,139,255);
    public static readonly Color DarkOliveGreen = new Color32(85,107,47,255);
    public static readonly Color DarkOrange = new Color32(255,140,0,255);
    public static readonly Color DarkOrchid = new Color32(153,50,204,255);
    public static readonly Color DarkRed = new Color32(139,0,0,255);
    public static readonly Color DarkSalmon = new Color32(233,150,122,255);
    public static readonly Color DarkSeaGreen = new Color32(143,188,143,255);
    public static readonly Color DarkSlateBlue = new Color32(72,61,139,255);
    public static readonly Color DarkSlateGray = new Color32(47,79,79,255);
    public static readonly Color DarkTurquoise = new Color32(0,206,209,255);
    public static readonly Color DarkViolet = new Color32(148,0,211,255);
    public static readonly Color DeepPink = new Color32(255,20,147,255);
    public static readonly Color DeepSkyBlue = new Color32(0,191,255,255);
    public static readonly Color DimGray = new Color32(105,105,105,255);
    public static readonly Color DodgerBlue = new Color32(30,144,255,255);
    public static readonly Color FireBrick = new Color32(178,34,34,255);
    public static readonly Color FloralWhite = new Color32(255,250,240,255);
    public static readonly Color ForestGreen = new Color32(34,139,34,255);
    public static readonly Color Fuchsia = new Color32(255,0,255,255);
    public static readonly Color Gainsboro = new Color32(220,220,220,255);
    public static readonly Color GhostWhite = new Color32(248,248,255,255);
    public static readonly Color Gold = new Color32(255,215,0,255);
    public static readonly Color Goldenrod = new Color32(218,165,32,255);
    public static readonly Color Gray = new Color32(128,128,128,255);
    public static readonly Color Green = new Color32(0,128,0,255);
    public static readonly Color GreenYellow = new Color32(173,255,47,255);
    public static readonly Color Honeydew = new Color32(240,255,240,255);
    public static readonly Color HotPink = new Color32(255,105,180,255);
    public static readonly Color IndianRed = new Color32(205,92,92,255);
    public static readonly Color Indigo = new Color32(75,0,130,255);
    public static readonly Color Ivory = new Color32(255,255,240,255);
    public static readonly Color Khaki = new Color32(240,230,140,255);
    public static readonly Color Lavender = new Color32(230,230,250,255);
    public static readonly Color Lavenderblush = new Color32(255,240,245,255);
    public static readonly Color LawnGreen = new Color32(124,252,0,255);
    public static readonly Color LemonChiffon = new Color32(255,250,205,255);
    public static readonly Color LightBlue = new Color32(173,216,230,255);
    public static readonly Color LightCoral = new Color32(240,128,128,255);
    public static readonly Color LightCyan = new Color32(224,255,255,255);
    public static readonly Color LightGoldenodYellow = new Color32(250,250,210,255);
    public static readonly Color LightGray = new Color32(211,211,211,255);
    public static readonly Color LightGreen = new Color32(144,238,144,255);
    public static readonly Color LightPink = new Color32(255,182,193,255);
    public static readonly Color LightSalmon = new Color32(255,160,122,255);
    public static readonly Color LightSeaGreen = new Color32(32,178,170,255);
    public static readonly Color LightSkyBlue = new Color32(135,206,250,255);
    public static readonly Color LightSlateGray = new Color32(119,136,153,255);
    public static readonly Color LightSteelBlue = new Color32(176,196,222,255);
    public static readonly Color LightYellow = new Color32(255,255,224,255);
    public static readonly Color Lime = new Color32(0,255,0,255);
    public static readonly Color LimeGreen = new Color32(50,205,50,255);
    public static readonly Color Linen = new Color32(250,240,230,255);
    public static readonly Color Magenta = new Color32(255,0,255,255);
    public static readonly Color Maroon = new Color32(128,0,0,255);
    public static readonly Color MediumAquamarine = new Color32(102,205,170,255);
    public static readonly Color MediumBlue = new Color32(0,0,205,255);
    public static readonly Color MediumOrchid = new Color32(186,85,211,255);
    public static readonly Color MediumPurple = new Color32(147,112,219,255);
    public static readonly Color MediumSeaGreen = new Color32(60,179,113,255);
    public static readonly Color MediumSlateBlue = new Color32(123,104,238,255);
    public static readonly Color MediumSpringGreen = new Color32(0,250,154,255);
    public static readonly Color MediumTurquoise = new Color32(72,209,204,255);
    public static readonly Color MediumVioletRed = new Color32(199,21,133,255);
    public static readonly Color MidnightBlue = new Color32(25,25,112,255);
    public static readonly Color Mintcream = new Color32(245,255,250,255);
    public static readonly Color MistyRose = new Color32(255,228,225,255);
    public static readonly Color Moccasin = new Color32(255,228,181,255);
    public static readonly Color NavajoWhite = new Color32(255,222,173,255);
    public static readonly Color Navy = new Color32(0,0,128,255);
    public static readonly Color OldLace = new Color32(253,245,230,255);
    public static readonly Color Olive = new Color32(128,128,0,255);
    public static readonly Color Olivedrab = new Color32(107,142,35,255);
    public static readonly Color Orange = new Color32(255,165,0,255);
    public static readonly Color Orangered = new Color32(255,69,0,255);
    public static readonly Color Orchid = new Color32(218,112,214,255);
    public static readonly Color PaleGoldenrod = new Color32(238,232,170,255);
    public static readonly Color PaleGreen = new Color32(152,251,152,255);
    public static readonly Color PaleTurquoise = new Color32(175,238,238,255);
    public static readonly Color PaleVioletred = new Color32(219,112,147,255);
    public static readonly Color PapayaWhip = new Color32(255,239,213,255);
    public static readonly Color PeachPuff = new Color32(255,218,185,255);
    public static readonly Color Peru = new Color32(205,133,63,255);
    public static readonly Color Pink = new Color32(255,192,203,255);
    public static readonly Color Plum = new Color32(221,160,221,255);
    public static readonly Color PowderBlue  = new Color32(176,224,230,255);
    public static readonly Color Purple = new Color32(128,0,128,255);
    public static readonly Color Red = new Color32(255,0,0,255);
    public static readonly Color RosyBrown = new Color32(188,143,143,255);
    public static readonly Color RoyalBlue = new Color32(65,105,225,255);
    public static readonly Color SaddleBrown = new Color32(139,69,19,255);
    public static readonly Color Salmon = new Color32(250,128,114,255);
    public static readonly Color SandyBrown = new Color32(244,164,96,255);
    public static readonly Color SeaGreen = new Color32(46,139,87,255);
    public static readonly Color Seashell = new Color32(255,245,238,255);
    public static readonly Color Sienna = new Color32(160,82,45,255);
    public static readonly Color Silver = new Color32(192,192,192,255);
    public static readonly Color SkyBlue = new Color32(135,206,235,255);
    public static readonly Color SlateBlue = new Color32(106,90,205,255);
    public static readonly Color SlateGray = new Color32(112,128,144,255);
    public static readonly Color Snow = new Color32(255,250,250,255);
    public static readonly Color SpringGreen = new Color32(0,255,127,255);
    public static readonly Color SteelBlue = new Color32(70,130,180,255);
    public static readonly Color Tan = new Color32(210,180,140,255);
    public static readonly Color Teal = new Color32(0,128,128,255);
    public static readonly Color Thistle = new Color32(216,191,216,255);
    public static readonly Color Tomato = new Color32(255,99,71,255);
    public static readonly Color Turquoise = new Color32(64,224,208,255);
    public static readonly Color Violet = new Color32(238,130,238,255);
    public static readonly Color Wheat = new Color32(245,222,179,255);
    public static readonly Color White = new Color32(255,255,255,255);
    public static readonly Color WhiteSmoke = new Color32(245,245,245,255);
    public static readonly Color Yellow = new Color32(255,255,0,255);
    public static readonly Color YellowGreen = new Color32(154,205,50,255);
}