by steps
000000 000000
000000
8a7687 8a7687
8a7687
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
8e728a 8e728a
8e728a
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
936e8e 936e8e
936e8e
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
986a92 986a92
986a92
7f00ff 7f00ff
7f00ff
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7f7f7f 7f7f7f
7f7f7f
9d6696 9d6696
9d6696
7f7fff 7f7fff
7f7fff
7fff00 7fff00
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7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
a26299 a26299
a26299
ff0000 ff0000
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ff00ff ff00ff
ff00ff
a75e9d a75e9d
a75e9d
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
ac5aa1 ac5aa1
ac5aa1
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
b156a5 b156a5
b156a5