by steps
000000 000000
000000
7f7f7f 7f7f7f
7f7f7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
78867b 78867b
78867b
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
728d77 728d77
728d77
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
6c9473 6c9473
6c9473
7f00ff 7f00ff
7f00ff
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7f7f00
669b6f 669b6f
669b6f
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7f7fff
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7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
5fa26b 5fa26b
5fa26b
ff0000 ff0000
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ff007f ff007f
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59a967 59a967
59a967
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
53b063 53b063
53b063
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
4db85f 4db85f
4db85f