// the default Colormap
uint8_t colorMap[] = { 0x00, 0x00, 0x00,
0x19, 0x10, 0x28,
0x46, 0xaf, 0x45,
0xa1, 0xd6, 0x85,
0x45, 0x3e, 0x78,
0x76, 0x64, 0xfe,
0x83, 0x31, 0x29,
0x9e, 0xc2, 0xe8,
0xdc, 0x53, 0x4b,
0xe1, 0x8d, 0x79,
0xd6, 0xb9, 0x7b,
0xe9, 0xd8, 0xa1,
0x21, 0x6c, 0x4b,
0xd3, 0x65, 0xc8,
0xaf, 0xaa, 0xb9,
0xf5, 0xf4, 0xeb };
uint8_t brightness = 64;