以下代码里的 red 为什么没有显示？

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LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 4. LaTeX Font Info: ... okay on input line 4. [1 ] (./example-red.aux) ) Here is how much of TeX's memory you used: 11263 strings out of 477474 237977 string characters out of 5841243 483425 words of memory out of 5000000 30562 multiletter control sequences out of 15000+600000 535096 words of font info for 30 fonts, out of 8000000 for 9000 1348 hyphenation exceptions out of 8191 96i,5n,99p,417b,508s stack positions out of 5000i,500n,10000p,200000b,80000s Output written on example-red.pdf (1 page).

表示你的代码能整齐吗？？由于你用的是xelatex,所以编辑不出来，要用pdflatex ``` \documentclass[10pt,a4paper]{article} \usepackage{xcolor} \usepackage{tikz} \begin{document} \begin{tikzpicture} \shadedraw [ball color=red] (13,-5) circle (1cm); \end{tikzpicture} \end{document} ```

https://github.com/CTeX-org/forum/issues/153