by steps
000000 000000
000000
7fff7f 7fff7f
7fff7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
7eef75 7eef75
7eef75
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
7edf6b 7edf6b
7edf6b
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
7ecf61 7ecf61
7ecf61
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
7f7f7f 7f7f7f
7f7f7f
7ebf57 7ebf57
7ebf57
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fffff 7fffff
7fffff
7eaf4d 7eaf4d
7eaf4d
ff0000 ff0000
ff0000
ff007f ff007f
ff007f
ff00ff ff00ff
ff00ff
7e9f43 7e9f43
7e9f43
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
7e8f39 7e8f39
7e8f39
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
7e8030 7e8030
7e8030