by steps
000000 000000
000000
728ac7 728ac7
728ac7
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00007f
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0000ff
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737db4
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007fff
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00ff7f
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7470a1
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774969
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783c56
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ff7f7f
ff7fff ff7fff
ff7fff
792f43 792f43
792f43
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
7b2231 7b2231
7b2231