by steps
000000 000000
000000
7f7f7f 7f7f7f
7f7f7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
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007f00
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007f7f
7a8374 7a8374
7a8374
007fff 007fff
007fff
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00ff7f 00ff7f
00ff7f
768769 768769
768769
00ffff 00ffff
00ffff
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728b5f 728b5f
728b5f
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6e8f54
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699349
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65973f 65973f
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ff7f7f
ff7fff ff7fff
ff7fff
619b34 619b34
619b34
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
5d9f2a 5d9f2a
5d9f2a