by steps
000000 000000
000000
ffff7f ffff7f
ffff7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
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e7eb82
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
d0d886 d0d886
d0d886
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
b8c489 b8c489
b8c489
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
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7f7f7f
a1b18d a1b18d
a1b18d
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
899d90 899d90
899d90
ff0000 ff0000
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ff007f
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ff00ff
728a94 728a94
728a94
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
5a7697 5a7697
5a7697
ffff00 ffff00
ffff00
ffffff ffffff
ffffff
43639b 43639b
43639b