by steps
000000 000000
000000
e72810 e72810
e72810
00007f 00007f
00007f
0000ff 0000ff
0000ff
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007f00
007f7f 007f7f
007f7f
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e52911
007fff 007fff
007fff
00ff00 00ff00
00ff00
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00ff7f
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e42a12
00ffff 00ffff
00ffff
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7f0000
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7f007f
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e22b14
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7f7f7f
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e12d15
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7f7fff
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7fff7f
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7fffff
e02e16 e02e16
e02e16
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de2f18
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ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
dd3019 dd3019
dd3019
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
dc321b dc321b
dc321b