by steps
000000 000000
000000
6f6f6f 6f6f6f
6f6f6f
00007f 00007f
00007f
0000ff 0000ff
0000ff
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7c707c
007fff 007fff
007fff
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00ff7f 00ff7f
00ff7f
8a728a 8a728a
8a728a
00ffff 00ffff
00ffff
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7f007f 7f007f
7f007f
987398 987398
987398
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7f7f7f
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a675a6
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b376b3 b376b3
b376b3
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c178c1 c178c1
c178c1
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ff7f7f
ff7fff ff7fff
ff7fff
cf79cf cf79cf
cf79cf
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
dd7bdd dd7bdd
dd7bdd