The Hex colour format used in this script is 0xBBGGRRAA. 0x - indicates the number is a hexidecimal number; BB - Blue channel, range 0x00 to 0xFF (0 - 255); GG - Green channel, range 0x00 to 0xFF (0 - 255); RR - Red channel, range 0x00 to 0xFF (0 - 255); AA - Alpha channel, range 0x00 to 0xFF (0 - 255), 0x00 - makes the pixel transparent (invisible) and 0xFF - makes the pixel fully opaque (completely visible).. 0xFFFFFFFF is white. All colour channels are at their maximum. 0x000000FF is bla