Summary: or your_catalog/default/theme.cfg. The basic CSS is located there, but you can easily enter your own by using Preferences, or going to the Variable.txt and edit the THEME_CSS variable entry. Each of the areas below are numbered, and a corresponding number is shown on the example screen shot at the end of this section. This will allow you to see which settings are mapped to which
Image Dimensions: 1004 x 363
Image originally found here.