by steps
000000 000000
000000
71892a 71892a
71892a
00007f 00007f
00007f
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0000ff
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007f7f 007f7f
007f7f
728b2a 728b2a
728b2a
007fff 007fff
007fff
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00ff7f
748d2b 748d2b
748d2b
00ffff 00ffff
00ffff
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7f007f
768f2c 768f2c
768f2c
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79942d
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7b962e 7b962e
7b962e
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
7d982f 7d982f
7d982f
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
7f9b30 7f9b30
7f9b30