by steps
000000 000000
000000
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007f7f 007f7f
007f7f
138111 138111
138111
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00ff7f 00ff7f
00ff7f
268323 268323
268323
00ffff 00ffff
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398535 398535
398535
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4c8747
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5f8959
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728b6b 728b6b
728b6b
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ff7fff
858d7d 858d7d
858d7d
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ffff7f
ffffff ffffff
ffffff
998f8f 998f8f
998f8f