The color of the font changed

Yesterday I noticed that the font color of the links and the headline in the Community Builder changed.
Till yesterday it was green such as the template in Joomla is adjusted (like the Menue).
Since yesterday the color changed into blue (see attached file).
I didn't make any changes in the template or userprofil. I only made changes in a drop down field in Community Builder.
What could be the reason for the color change and how can I undo this?

Link: www.aurum-manus.net/cb-profile/220-elke-armbruster.html

Kind regards
Jürgen

We use Bootstrap 3, which has blue href links. Your menu is outside of CB so CB won't style it at all and is styled by your template. Your Joomla templates href styling has too weak of a selector to override CBs. If your Joomla template is Bootstrap 3 powered you can turn off CBs Bootstrap CSS within CB > Configuration > Integrations otherwise your Joomla template needs stronger CSS selectors to override CB. Note nothing in this regard has changed recently and has been this way since CB 2.x released with built in Bootstrap 3.