by steps
000000 000000
000000
728ce0 728ce0
728ce0
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
638ae3 638ae3
638ae3
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
5588e7 5588e7
5588e7
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
4787eb 4787eb
4787eb
7f00ff 7f00ff
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7f7f00
7f7f7f 7f7f7f
7f7f7f
3985ef 3985ef
3985ef
7f7fff 7f7fff
7f7fff
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7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
2a83f3 2a83f3
2a83f3
ff0000 ff0000
ff0000
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ff007f
ff00ff ff00ff
ff00ff
1c82f7 1c82f7
1c82f7
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
0e80fb 0e80fb
0e80fb
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff