by steps
000000 000000
000000
0000ff 0000ff
0000ff
00007f 00007f
00007f
007f00 007f00
007f00
007f7f 007f7f
007f7f
161cfd 161cfd
161cfd
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
2d39fc 2d39fc
2d39fc
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f
4455fa 4455fa
4455fa
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7f7f00
7f7f7f 7f7f7f
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5b72f9
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7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
728ef8 728ef8
728ef8
ff0000 ff0000
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ff007f
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89abf6 89abf6
89abf6
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
a0c7f5 a0c7f5
a0c7f5
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
b7e4f4 b7e4f4
b7e4f4