by steps
000000 000000
000000
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00007f
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0000ff
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007f7f 007f7f
007f7f
0e1118 0e1118
0e1118
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007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
1c2231 1c2231
1c2231
00ffff 00ffff
00ffff
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7f007f
2a334a 2a334a
2a334a
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394563 394563
394563
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47567b 47567b
47567b
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556794 556794
556794
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ff7f7f
ff7fff ff7fff
ff7fff
6378ad 6378ad
6378ad
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
728ac6 728ac6
728ac6