by steps
000000 000000
000000
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7f7f00
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00007f
0000ff 0000ff
0000ff
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007fff 007fff
007fff
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728f3a 728f3a
728f3a
00ffff 00ffff
00ffff
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66a074
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ff7f7f
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ff7fff
53b8cb 53b8cb
53b8cb
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
4dc1e8 4dc1e8
4dc1e8