63,64,128
#
in steps
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000000
7f007f 7f007f
7f007f
00007f 00007f
00007f
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0000ff
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007f00
007f7f 007f7f
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5f207f 5f207f
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00ffff 00ffff
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0f7081 0f7081
0f7081
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
008082 008082
008082