Now let's review some of the most beautiful themes for Redmine (in my personal opinion).
Remember, however, that by selecting a theme, you actually choose which existing site you want your Redmine to look like. Public themes, especially nice-looking ones, are used widely and often. So, if you can afford it, order a unique theme for your website.
The Basecamp theme was created by Peter Theill. It is a port of 37signals' Basecamp theme for Redmine:
Note
This theme can be downloaded from https://github.com/theill/redmine-basecamp-theme.
This theme was originally authored by Eero Louhenperä from Modula.
Note
Later, the maintenance of this theme was taken over by Steven Jones from Computer minds, so now it can be found at https://github.com/computerminds/modula-mojito. Unfortunately, it has not been updated for a long time (3 years).