by steps
000000 000000
000000
7f7fff 7f7fff
7f7fff
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00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
728def 728def
728def
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007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
659bdf 659bdf
659bdf
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
58a9cf 58a9cf
58a9cf
7f00ff 7f00ff
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4bb7bf 4bb7bf
4bb7bf
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7fff7f
7fffff 7fffff
7fffff
3ec5af 3ec5af
3ec5af
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31d39f 31d39f
31d39f
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
24e18f 24e18f
24e18f
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
18f07f 18f07f
18f07f