This could be caused by the display settings on your monitor being incorrect. Please try adjusting the brightness, contrast, or other settings on your machine's monitor.
If these adjustments do not resolve the issue, please try opening Connexion client on a different machine, or have a colleague test. If you are still not seeing the display as you expect, please contact OCLC Support with your OCLC symbol, a screenshot of your client, and a description of the steps you have tried so far.