by steps
000000 000000
000000
6f8f67 6f8f67
6f8f67
00007f 00007f
00007f
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0000ff
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007f00
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708e67
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00ff7f
728e67 728e67
728e67
00ffff 00ffff
00ffff
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738e67
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7f7f7f
758e68 758e68
758e68
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778d68 778d68
778d68
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788d68 788d68
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
7a8d68 7a8d68
7a8d68
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
7c8d69 7c8d69
7c8d69