by steps
000000 000000
000000
669922 669922
669922
00007f 00007f
00007f
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0000ff
007f00 007f00
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007f7f 007f7f
007f7f
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69951d
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007fff
00ff00 00ff00
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00ff7f
6c9219 6c9219
6c9219
00ffff 00ffff
00ffff
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7f007f
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6f8f15
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728c11 728c11
728c11
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75880c 75880c
75880c
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788508
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
7b8204 7b8204
7b8204
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff