by steps
000000 000000
000000
00ff00 00ff00
00ff00
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
01fc0f 01fc0f
01fc0f
007fff 007fff
007fff
00ff7f 00ff7f
00ff7f
03fa1f 03fa1f
03fa1f
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
04f82e 04f82e
04f82e
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
7f7f7f 7f7f7f
7f7f7f
06f63e 06f63e
06f63e
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
08f34d 08f34d
08f34d
ff0000 ff0000
ff0000
ff007f ff007f
ff007f
ff00ff ff00ff
ff00ff
09f15d 09f15d
09f15d
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
0bef6c 0bef6c
0bef6c
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
0ded7c 0ded7c
0ded7c