by steps
000000 000000
000000
ff7f00 ff7f00
ff7f00
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
f77d01 f77d01
f77d01
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
ef7b03 ef7b03
ef7b03
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
e77904 e77904
e77904
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
7f7f7f 7f7f7f
7f7f7f
df7806 df7806
df7806
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
d77607 d77607
d77607
ff0000 ff0000
ff0000
ff007f ff007f
ff007f
ff00ff ff00ff
ff00ff
cf7409 cf7409
cf7409
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
c7720a c7720a
c7720a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
c0710c c0710c
c0710c