by steps
000000 000000
000000
669b2f 669b2f
669b2f
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00007f
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6c9523 6c9523
6c9523
00ffff 00ffff
00ffff
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6f921d 6f921d
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728f17
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758c11 758c11
758c11
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ff7f7f
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7b8605 7b8605
7b8605
ffff00 ffff00
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ffff7f
ffffff ffffff
ffffff
7e8400 7e8400
7e8400