by steps
000000 000000
000000
7f7f7f 7f7f7f
7f7f7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
72837d 72837d
72837d
007fff 007fff
007fff
00ff00 00ff00
00ff00
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00ff7f
65887c 65887c
65887c
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
598c7a 598c7a
598c7a
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
4c9179 4c9179
4c9179
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7f7fff
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7fff7f
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7fffff
3f9678 3f9678
3f9678
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339a76 339a76
339a76
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
269f75 269f75
269f75
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
1aa474 1aa474
1aa474