by steps
000000 000000
000000
75928a 75928a
75928a
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
799189 799189
799189
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
7d9089 7d9089
7d9089
00ffff 00ffff
00ffff
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7f0000
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7f007f
819088 819088
819088
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7f7f7f 7f7f7f
7f7f7f
868f88 868f88
868f88
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7f7fff
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7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
8a8e88 8a8e88
8a8e88
ff0000 ff0000
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ff007f
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ff00ff
8e8e87 8e8e87
8e8e87
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
928d87 928d87
928d87
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
978d87 978d87
978d87