by steps
000000 000000
000000
43adad 43adad
43adad
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00007f
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0000ff
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5a9797
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007fff
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00ff7f
728181 728181
728181
00ffff 00ffff
00ffff
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7f007f
896c6c 896c6c
896c6c
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b84040
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d02b2b
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ff7fff ff7fff
ff7fff
e71515 e71515
e71515
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff