While recently upgrading Redmine via Bitnami I stumbled upon the coolest set of themes/plugins for Redmine since I started using it back in 2011: RedmineCRM. I instantly moved to using a customized version of their Circle theme and am going to install a few of their plugins to help workflow over the next few days.
If you use Redmine and have not looked at RedmineCRM – take a few minutes and check them out!