by steps
000000 000000
000000
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7f7f00
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00007f
0000ff 0000ff
0000ff
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7a7f09
007fff 007fff
007fff
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00ff7f
767f13 767f13
767f13
00ffff 00ffff
00ffff
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72801d 72801d
72801d
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6e8027
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698031
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65813b 65813b
65813b
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ff7fff ff7fff
ff7fff
618145 618145
618145
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ffffff ffffff
ffffff
5d824f 5d824f
5d824f