Redmine-themes is a project mainly written in ..., it's free.
Persian RTL themes for Redmine
h1. Persian Redmine Themes
h2. About
p. Redmine themes can be customized and here there is a theme based on Basecamp theme that is manipulated to support RTL. It also has a font for better display of Persian glyphs.
h2. Installation
p. To install, copy the basecamp-persian folder under your redmine/public/themes folder. Then choose basecamp-persian in display tab of redmine settings.