Does anybody know if this exists, and if it does, where I could find it?
The whole Stack Exchange network uses Google Code Prettify for syntax highlighting. Reading its TeX lexer, and maybe some discussion, you can figure out there are just a few regular expressions doing the matching. Crossing the data with the default stylesheet you can see only six classes are needed. To get their attributes you can either perform the exegesis of the minified stylesheet of this site or use your browser's inspector. The result (shomewhat interpreted):
.prettyprint { background-color: #eeeeee; } /* code snippet */
.pln { color: #000000; } /* plain text and whitespace */
.com { color: #868686; } /* comments */
.kwd { color: #8a4a0b; } /* macros ([a-Z@]* or single char) */
.typ { color: #2b91af; } /* $ & */
.lit { color: #953838; } /* dimensions */
.pun { color: #145680; } /* {}[]()= */
You now need to put this into a TeXstudio color profile. This can be done with relative ease (Options > Configure TeXstudio > Syntax Highlighting). The match won't be perfect, since the highlighting routines are quite different: TeXstudio wants to be smarter. Here is something to get you started:
[formats]
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version=1.0
Load it with Options > Load Profile. Have fun.
