by steps
000000 000000
000000
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717636
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00007f
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0000ff
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007f7f 007f7f
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72874f
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007fff
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00ff7f
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749868
00ffff 00ffff
00ffff
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7f007f
76a981 76a981
76a981
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78ba9a
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ff7fff ff7fff
ff7fff
7dede5 7dede5
7dede5
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff