[Rubrics] Font and color for teacher comments

Problem statement:

The font size of teacher comments under each line item in the rubrics is so tiny, and the grayscale color blends into the other type, so students really are missing some crucial feedback.

Proposed solution:

In order to make teacher comments in rubrics more noticeable to students, the font should be larger than the line item text size AND the teacher comments should be a different color to make them stand out.

User role(s):

instructor