[Theme][Redmine] How to install different theme

Download Purplemine2

git clone git@github.com:mrliptontea/PurpleMine2.git
cp PurpleMine2 to redmine-3.3.1/public/themes

Open web browser to select new theme.
Then go to Redmine > Administration > Settings > Display and select PurpleMine2 from the list and save the changes.

Reference:

• PurpleMine2