I have just updated to OS X 10.10.3 and now I cannot see the name on the tokens in Capture One 8. They are white. If I highlight a token, I can see the text but the background turns grey.
This was fixed in Capture One 8.2.2. Update your software to that version or to a later one to resolve the problem.
White or blank tokens are a known issue associated with OS X 10.10.3 Yosemite and Capture One 8.2.1. Changes made in OS X 10.10.3 update caused some graphic elements to render differently. Thus, the token background changed from grey to white, resulting in white text on a white background when the tokens are not highlighted, which is a side effect resulting from the update of the operating system. Capture One 8.2.2 resolved that conflict so that this issue is not present in later versions of the software.