by steps
000000 000000
000000
1ef78e 1ef78e
1ef78e
00007f 00007f
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0000ff
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007f7f 007f7f
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2ae89c 2ae89c
2ae89c
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36d9aa 36d9aa
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00ffff 00ffff
00ffff
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42cab8 42cab8
42cab8
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5aacd4 5aacd4
5aacd4
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669de2 669de2
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ff7fff ff7fff
ff7fff
728ef0 728ef0
728ef0
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff