by steps
000000 000000
000000
70507f 70507f
70507f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
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007f7f 007f7f
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81468f 81468f
81468f
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
933c9f 933c9f
933c9f
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
a532af a532af
a532af
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7f7f7f
b728bf b728bf
b728bf
7f7fff 7f7fff
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c91ecf c91ecf
c91ecf
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db14df db14df
db14df
ff7f00 ff7f00
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
ed0aef ed0aef
ed0aef
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff