by steps
000000 000000
000000
808666 808666
808666
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
728576 728576
728576
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
648487 648487
648487
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f
568397 568397
568397
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7f7f00
7f7f7f 7f7f7f
7f7f7f
4882a8 4882a8
4882a8
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7fff7f
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7fffff
3a81b9 3a81b9
3a81b9
ff0000 ff0000
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2c80c9 2c80c9
2c80c9
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
1e7fda 1e7fda
1e7fda
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
107feb 107feb
107feb