Describe the bug
The Credits and Licence Area on the "about MacPass" Window have black text on gray background.

To Reproduce
Steps to reproduce the behavior:

1. Open macPass
2. Click on MacPass -> About MacPass

Expected behavior
Font color should have the color of the other text

Screenshots

Desktop (please complete the following information):

• macOS: 10.14.3
• Version: 0.7.6