Theme Control Panel Opencart Module
Theme Control Panel controlled by the admin area – allows you to set unlimited color combinations, full control over the colors of the site elements, custom background colors, textures and images, custom font options(200+ Google Font supported).
Admin Panel Demo
http://opencarttemplate.info/color/admin
User: demo | Pass: demo
After login to admin panel, go to Extensions -> Modules and then click Edit beside to Theme Control Panel