Description of problem:

The light theme of Developer Hub 1.7 has a black bacground with black text for the "My Groups" submenu, so it's impossible to read its content. 

Prerequisites (if any, like setup, operators/versions):

RHDH 1.7.1

Steps to Reproduce

1. Run RHDH 1.7
2. Login as an user that belongs to a group +
3. Set the "light theme"
4. Open the left side menù "My Groups"

Actual results:

Submenu has black text on a. black background.

Expected results:

Background is white. 

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

Additional info (Such as Logs, Screenshots, etc):