by steps
000000 000000
000000
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7f7f00
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00007f
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0000ff
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7a8307
007fff 007fff
007fff
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00ff7f
76870e 76870e
76870e
00ffff 00ffff
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728c15 728c15
728c15
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6a9424
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66992b 66992b
66992b
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ff7fff ff7fff
ff7fff
629d32 629d32
629d32
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ffff00
ffff7f ffff7f
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ffffff ffffff
ffffff
5ea23a 5ea23a
5ea23a