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In a tex file, almost all the characters inside delimiters like $...$ or \[...\] have the same color, but there are some characters, like = (and possibly others) which have a different color. I would like to change the syntax so that everything inside math delimiters has the same color. For example, in the picture below, I would like the = sign to be cyan like the other characters.

enter image description here

I have looked at the syntax\tex.vim file but haven't been able to find the proper highlighting setting. I also have vimtex, but I assume it doesn't have the syntax I want by default.

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    Well, there's texMathZone with a letter, and (for me) = and ^ are texMathOper. Are you using dracula, btw? The equation characters are purple for me, not cyan.
    – D. Ben Knoble
    Commented Nov 5, 2020 at 16:56
  • @D.BenKnoble thank you, very helpful! Yes I have your theme but I have tried to tinker with it in my vimrc. Commented Nov 5, 2020 at 17:20

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Create a new file under VIM_RUNTIME_PATH/syntax, maybe ~/.vim/sytax

syntax/tex.vim

syn clear texMathOper
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    I'm not sure I understand your answer, but thank you for telling me what the highlight variable is. I have changed it with autocmd ColorScheme. Commented Nov 5, 2020 at 17:22

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