Since the last Canvas release (1/9/16) our faculty have noticed that any columns they have muted in the gradebook are so greyed out that they functionally cannot read them. Canvas support tells me that the only way to fix it is for us to use a CSS. Is there any other way? I'm not about to dive into that right now, since I admit I would not know what I would be doing and would more likely break something in the process. Surely we aren't the only one with this issue, right?
Here is a screenshot of what we see. The column on the left is "normal" and the one on the right is muted. I've highlighted in the red squares the very-greyed out elements that our faculty are struggling to see.