by steps
000000 000000
000000
728598 728598
728598
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
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007f7f
70859a 70859a
70859a
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007fff
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00ff00
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00ff7f
6f869d 6f869d
6f869d
00ffff 00ffff
00ffff
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7f007f
6e869f 6e869f
6e869f
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7f7f7f
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6d87a2
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7fff7f
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7fffff
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6b88a5
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6a88a7 6a88a7
6a88a7
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
6989aa 6989aa
6989aa
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
688aad 688aad
688aad