137,143,153
#
in steps
000000 000000
000000
7f7f7f 7f7f7f
7f7f7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
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818385
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84878c 84878c
84878c
00ffff 00ffff
00ffff
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868b92
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909bac 909bac
909bac
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
939fb3 939fb3
939fb3