グレーから白までのパーセンテージの単色グラデーション シェードを使用しましたtcolorbox。PDF の出力で CMYK 混合色が表示されていることを確認しましたが、TeX コーディングは正しいでしょうか?
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\tcbuselibrary{skins}
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\definecolor{boxonegradbegin}{cmyk}{0,0,0,0.10}%
\newtcolorbox{gradientbox}[1][]{%
enhanced,boxrule=0pt,boxsep=0pt,sharp corners,
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#1
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The Strati resulted from the 3D Printed Car Design Challenge, conducted using crowd-sourcing technologies by Local Motors, which is based in Phoenix, Arizona. The company believes it is at the forefront of the 3D Industrial Revolution and describes itself as a free online and physical workspace that enables people to turn their vehicle innovations into reality and rewards them for their contribution. The key issues discussed in the brief for the design challenge were as follows.
\end{gradientbox}
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