Syntax highlighting when editing code

I edit my code in a text editor. I’m currently using Atom. The editor does syntax highlighting for the HTML portions of the code, which is useful, but I was wondering if there was a way to get it to color-code the bracketed code as well. If CCS code is uniquely formatted, then the only answer would be to create our own language package, but if CCS follows the format of some other language, then perhaps we could just select that language. I don’t know enough about CCS and all other languages to know if CCS’ templating format is unique or not.