by steps
000000 000000
000000
7f7f7f 7f7f7f
7f7f7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
8d7886 8d7886
8d7886
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
9c728e 9c728e
9c728e
00ffff 00ffff
00ffff
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ab6c96
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ba669e
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7fff7f 7fff7f
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c95fa6
ff0000 ff0000
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ff7f7f
ff7fff ff7fff
ff7fff
e753b6 e753b6
e753b6
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
f64dbe f64dbe
f64dbe