by steps
000000 000000
000000
ffff7f ffff7f
ffff7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
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e5e27f
007fff 007fff
007fff
00ff00 00ff00
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00ff7f
cbc67f cbc67f
cbc67f
00ffff 00ffff
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7f0000 7f0000
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7f007f 7f007f
7f007f
b1a980 b1a980
b1a980
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7f7f7f 7f7f7f
7f7f7f
978d80 978d80
978d80
7f7fff 7f7fff
7f7fff
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7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
7d7180 7d7180
7d7180
ff0000 ff0000
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635481 635481
635481
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
493881 493881
493881
ffff00 ffff00
ffff00
ffffff ffffff
ffffff
2f1c82 2f1c82
2f1c82