The Colour object:
struct Colour {
byte alpha;
byte red;
byte green;
byte blue;
};
Predefined colours:
#define TRANSPARENT argb(0xFF,0xFF,0xFF,0xFF)
#define BLACK rgb(0x00,0x00,0x00)
#define WHITE rgb(0xFF,0xFF,0xFF)
#define BLUE rgb(0x00,0x00,0xFF)
#define YELLOW rgb(0xFF,0xFF,0x00)
#define GREEN rgb(0x00,0xFF,0x00)
#define MAGENTA rgb(0xFF,0x00,0xFF)
#define RED rgb(0xFF,0x00,0x00)
#define CYAN rgb(0x00,0xFF,0xFF)
#define GREY rgb(0x80,0x80,0x80)
#define GRAY rgb(0x80,0x80,0x80)
#define LIGHT_GREY rgb(0xC0,0xC0,0xC0)
#define LIGHT_GRAY rgb(0xC0,0xC0,0xC0)
#define PALE_GREY rgb(0xE0,0xE0,0xE0)
#define PALE_GRAY rgb(0xE0,0xE0,0xE0)
#define DARK_GREY rgb(0x40,0x40,0x40)
#define DARK_GRAY rgb(0x40,0x40,0x40)
#define DARK_BLUE rgb(0x00,0x00,0x80)
#define DARK_GREEN rgb(0x00,0x80,0x00)
#define DARK_RED rgb(0x80,0x00,0x00)
#define LIGHT_BLUE rgb(0x80,0xC0,0xFF)
#define LIGHT_GREEN rgb(0x80,0xFF,0x80)
#define LIGHT_RED rgb(0xFF,0xC0,0xFF)
#define PINK rgb(0xFF,0xAF,0xAF)
#define BROWN rgb(0x60,0x30,0x00)
#define ORANGE rgb(0xFF,0x80,0x00)
#define PURPLE rgb(0xC0,0x00,0xFF)
#define LIME rgb(0x80,0xFF,0x00)