by steps
000000 000000
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999e5a 999e5a
999e5a
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0000ff
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007f7f 007f7f
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949f5d 949f5d
949f5d
007fff 007fff
007fff
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00ff7f 00ff7f
00ff7f
90a061 90a061
90a061
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88a369
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84a46c 84a46c
84a46c
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80a670 80a670
80a670
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
7ca774 7ca774
7ca774
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
78a978 78a978
78a978