by steps
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000000
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8e8213
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00007f
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0000ff
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8f8214 8f8214
8f8214
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007fff
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00ff7f
908216 908216
908216
00ffff 00ffff
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928218 928218
928218
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93821a 93821a
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96821d
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ff7f7f
ff7fff ff7fff
ff7fff
97821f 97821f
97821f
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
998321 998321
998321