CSS Code for themes?

Is there a way to access the coding for themes? My institution is a fan of a few of them but would like the color schemes to match the university colors.

Themes are stored in the themes folder of your Omeka install. You might want to check out the developer documentation on modifying themes.

Where would I find that at? We are using Reclaim Hosting for the install and I am still new to all of it.

If you look at their documentation relating to Omeka - http://docs.reclaimhosting.com/omeka/uploading-plugins-to-omeka - the themes folder is on the same level as the plugins folder.