By the default, Classipress include ten color schemes which can be setup through the Classipress admin settings. Other than that it will may require further code customization and or through the use of a plugin.
The theme is not encrypted and so it can definitely be modified according to your requirements. Implementation is just dependent upon your coding skills or you can just hire a programmer to do it for you. Appthemes also have certified partners
http://www.appthemes.com/partners/ that can be contacted for customization jobs.
