by steps
000000 000000
000000
7f7f7f 7f7f7f
7f7f7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
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007f00
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007f7f
7a8378 7a8378
7a8378
007fff 007fff
007fff
00ff00 00ff00
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00ff7f
768872 768872
768872
00ffff 00ffff
00ffff
7f0000 7f0000
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728c6b 728c6b
728c6b
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6e9165
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69955f
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659a58 659a58
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ff7f7f
ff7fff ff7fff
ff7fff
619e52 619e52
619e52
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
5da34c 5da34c
5da34c