by steps
000000 000000
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87830f
007fff 007fff
007fff
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8f871f 8f871f
8f871f
00ffff 00ffff
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978b2e 978b2e
978b2e
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9f8f3e 9f8f3e
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ff7f7f ff7f7f
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ff7fff ff7fff
ff7fff
b79b6c b79b6c
b79b6c
ffff00 ffff00
ffff00
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ffffff ffffff
ffffff
c09f7c c09f7c
c09f7c