I've been making some changes to the Shortlist source code, and I'm wondering what's the best way to change symbol colors. In src/app/config.js, you can change the icon source image with the ICON_SRC property (which I've done successfully). In the same file, there are also COLOR_ORDER and COLOR_SCHEMES properties. I've changed colors in both, but seems to have no effect. Do I need to make changes elsewhere?