Codemix is unable to render SASS. It handles SCSS totally fine though. The difference between the two is SCSS has all the syntax and SASS has none of the syntax and uses indentation.
I have a VueJS project with each .vue file containing SASS, CoffeeScript, and Pug. Then my project is all indent style and looks quite nice.
The coffee and pug syntax highlighting works awesome, then the SASS is just grey all the time. VSCode surprisingly does not support SASS out of the box and therefore my SASS is all grey there too. So I simply installed the SASS plugin from the market (https://marketplace.visualstudio.com/items?itemName=robinbentley.sass-indented) which made it all work in VSCode but not Codemix. Then I try to install it in codemix with install from vsix file and I get an error it is not compatible with the version of vscode codemix ships with.
Please add the SASS plugin to the list of installable plugins in Codemix
https://marketplace.visualstudio.com/items?itemName=robinbentley.sass-indented
Alternatively fix the issue with the install from vsix file which has never worked on any plugin for me ever.