This one wasn't an inking issue. All the Boskies have light blue instead of the darker blue, but like Dan said, we can't assume it was a design mistake. It could've been on purpose for some unknown reason, which sounds dumb, but we can't mark them as UER. 1994 Topps had a bunch of similar issues in Series One where team colors weren't consistent among players on the same team. I think 1993 Topps had a few as well.
I added the light blue/blue as a Comment on the card, and that's what we can do with all the other cards with similar coloring issues.
https://www.tcdb.com/UserCommentsC.cfm/sid/142/1990-FleerUpdate
* Ed * L8 * Cards in my personal Collection are unavailable *