by steps
000000 000000
000000
ffff7f ffff7f
ffff7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
e1fb70 e1fb70
e1fb70
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
c4f762 c4f762
c4f762
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
a7f353 a7f353
a7f353
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
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7f7f7f
8aef45 8aef45
8aef45
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
6ceb37 6ceb37
6ceb37
ff0000 ff0000
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ff007f
ff00ff ff00ff
ff00ff
4fe728 4fe728
4fe728
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
32e31a 32e31a
32e31a
ffff00 ffff00
ffff00
ffffff ffffff
ffffff
15df0c 15df0c
15df0c