#define COLOUR_BLACK 0x00
#define COLOUR_BLUE 0x01
#define COLOUR_GREEN 0x02
#define COLOUR_CYAN 0x03
#define COLOUR_RED 0x04
#define COLOUR_PURPLE 0x05
#define COLOUR_BROWN 0x06
#define COLOUR_GRAY 0x07
#define COLOUR_DARK_GREY 0x08
#define COLOUR_LIGHT_BLUE 0x09
#define COLOUR_LIGHT_GREEN 0x0A
#define COLOUR_LIGHT_CYAN 0x0B
#define COLOUR_LIGHT_RED 0x0C
#define COLOUR_LIGHT_PURPLE 0x0D
#define COLOUR_YELLOW 0x0E
#define COLOUR_WHITE 0x0F