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I was trying to implement an example from the following answer https://tex.stackexchange.com/a/25708/96546 and encountered some strange behaviour. Here is an example:

        \fill [red] (0,0) circle;
        \fill [green] (1,0) circle;
        \fill [blue] (2,0) circle;

        \draw [->,-latex,thick] (-0.5,-1) -- (1,-1) node[midway,fill=red,scale=0.8]{$hello$};

While the colors in the \fill commands are all translated to grayscale as required the label of the \draw command remains colored. How can I get this in grayscale too?

Background: I'd like to check if the grayscale version of my picture is still legible, i.e. if the colors can be distinguished.

marked as duplicate by TeXnician, user36296, Stefan Pinnow, Schweinebacke, diabonas Sep 11 '17 at 12:16

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  • see tex.stackexchange.com/a/385169/36296 – user36296 Sep 11 '17 at 11:30
  • @samcarter thanks! your linked didn't help directly since it only showed the problems rather than providing a solution. But following the links from there I found: tex.stackexchange.com/a/326367/96546 This did answer my question, which I will mark as a duplicate. – Wolpertinger Sep 11 '17 at 11:56
  • 1
    @ Wolpertinger Another hack I use when I cannot avoid the usage of fill=... is to mix the colour with 0% of another colour, e.g. fill=red!0!white. – user36296 Sep 11 '17 at 12:05

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