15,7,187
#
in steps
000000 000000
000000
1208b0 1208b0
1208b0
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
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1107b2 1107b2
1107b2
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00ff7f
1007b5 1007b5
1007b5
00ffff 00ffff
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1007b8 1007b8
1007b8
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7f7f00
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0f07bb 0f07bb
0f07bb
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7fffff 7fffff
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0e06bd 0e06bd
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0e06c0 0e06c0
0e06c0
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
0d06c3 0d06c3
0d06c3
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
0d06c6 0d06c6
0d06c6