by steps
000000 000000
000000
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7f7f7f
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00007f
0000ff 0000ff
0000ff
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7a8386
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00ff7f
76878e 76878e
76878e
00ffff 00ffff
00ffff
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728b95 728b95
728b95
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6e8f9d
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6993a5
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ff7fff
619bb4 619bb4
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ffff00
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ffff7f
ffffff ffffff
ffffff
5da0bc 5da0bc
5da0bc