by steps
000000 000000
000000
74728d 74728d
74728d
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
78728c 78728c
78728c
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
7c728c 7c728c
7c728c
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
80738b 80738b
80738b
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7f7f7f
84738b 84738b
84738b
7f7fff 7f7fff
7f7fff
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7fff00
7fff7f 7fff7f
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7fffff 7fffff
7fffff
88738b 88738b
88738b
ff0000 ff0000
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8c748a 8c748a
8c748a
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
90748a 90748a
90748a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
94758a 94758a
94758a