Processing Multiple Sass Files

Ember CLI
1

When I run ember build --prod, I would like to process different sass files and output multiple corresponding css files (in our app, we serve different css based on what url is used to load the app). I know that in ember-cli-build, you can configure outputPaths to add new key/value pairs for each different sass/css file we want processed separately. Currently, we are manually doing this for each sass input and css output. For example:

    outputPaths: {
        app: {
            css: {
                'themes/gold': '/assets/themes/gold.css',
                'themes/silver': '/assets/themes/silver.css',
                'themes/blue': '/assets/themes/blue.css'
            }
        }
    }

But is there a way for Ember CLI to just look into a folder and compile everything inside into their corresponding css file? I tried something like below, along with several variations, but no luck yet.

    outputPaths: {
        app: {
            css: {
                'themes/*': '/assets/themes/*.css'
            }
        }
    }