by steps
000000 000000
000000
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00007f
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0000ff
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007f7f 007f7f
007f7f
161c6f 161c6f
161c6f
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007fff
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00ff00
00ff7f 00ff7f
00ff7f
2d3860 2d3860
2d3860
00ffff 00ffff
00ffff
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445550 445550
445550
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5b7141
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728d32 728d32
728d32
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89aa22 89aa22
89aa22
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ff7fff
a0c613 a0c613
a0c613
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
b7e304 b7e304
b7e304