Dark theme issues

[msoupcoff]

Certain colors look to be hardcoded and thus look out of place or fail color contrast test when switching to dark theme. Also reported in core jira project (https://sakaiproject.atlassian.net/browse/SAK-46981)

1. On Attendance tab:
   

2. After selecting an item to take attendance:
   

3. After selecting an item to take attendance & selecting the Edit attendance item icon:
   

4. After selecting an item to take attendance & selecting the Print icon:
   

5. After selecting an item to take attendance & scroll over students (odd rows):
   

6. After selecting an item to take attendance & selecting a student's name
   

7. On Attendance By Student tab:
   

8. On Grading tab:
   

9. On Settings tab:
   

[profmikegreene]

You can assign this to me if no one on your team isn't already working on it.

[davidpbauer]

We have made some fixes to the dark theme locally. I can see if Joe who made the changes can make a pull request. It would at least be a place to start if you have more pressing things.