Is there a LaTeX command for the equal (=) sign? I'd like to overwrite the command so that all equal signs in my document are colored green. But it seems I cannot do it with just the symbol =, which is not a command.


Every character can be turned into a command in math mode, but some special tricks are needed.




\AtBeginDocument{\mathcode`=\string"8000 }


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  • 4
    Since the code is not too long, could you please explain how it works too, egreg? Thanks!
    – Mika H.
    Mar 9 '13 at 19:13
  • I'm asking also because I'd like to do other characters, like > < ) ( etc.
    – Mika H.
    Mar 9 '13 at 19:33
  • 1
    @MikaH. It works similar to the accepted answer of LaTeX color setting for math mode. Mar 9 '13 at 19:34

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