// 'test_pattern', 32x24px
0xcc, 0xcc, 0x00, 0xff, 0xcc, 0xcc, 0x00, 0xff, 0x33, 0x33, 0x00, 0xff, 0x33, 0x33, 0x00, 0xff, 
0xcc, 0xcc, 0x00, 0xff, 0xcc, 0xcc, 0x00, 0xff, 0x33, 0x33, 0x00, 0xff, 0x33, 0x33, 0x00, 0xff, 
0xcc, 0xcc, 0x00, 0xff, 0xcc, 0xcc, 0x00, 0xff, 0x33, 0x33, 0x00, 0xff, 0x33, 0x33, 0x00, 0xff, 
0xf0, 0xf0, 0xfe, 0xff, 0xf0, 0xf0, 0xfd, 0xff, 0xf0, 0xf0, 0xfb, 0xff, 0xf0, 0xf0, 0xf7, 0xff, 
0xf0, 0xf0, 0xef, 0xff, 0xf0, 0xf0, 0xdf, 0xff, 0xf0, 0xf0, 0xbf, 0xff, 0xf0, 0xf0, 0x7f, 0xff, 
0xf0, 0xf0, 0xff, 0xfe, 0xf0, 0xf0, 0xff, 0xfd, 0xf0, 0xf0, 0xff, 0xfb, 0xf0, 0xf0, 0xff, 0x77