by steps
000000 000000
000000
ffff7f ffff7f
ffff7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
eff484 eff484
eff484
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
e0e989 e0e989
e0e989
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
d1de8e d1de8e
d1de8e
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
7f7f7f 7f7f7f
7f7f7f
c2d393 c2d393
c2d393
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
b2c898 b2c898
b2c898
ff0000 ff0000
ff0000
ff007f ff007f
ff007f
ff00ff ff00ff
ff00ff
a3bd9d a3bd9d
a3bd9d
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
94b2a2 94b2a2
94b2a2
ffff00 ffff00
ffff00
ffffff ffffff
ffffff
85a7a7 85a7a7
85a7a7