Um, the title is basically the question. Which is can the LEARNER control whether or not their "High Contrast Mode" switch is on of off?
Oh, and then, IF SO... is there a way, as an ADMIN that you can DISABLE the learner's ability to control the high contrast mode.
It looks like my predecessor didn't have that in mind when doing images (and probably didn't have Photoshop). When I view a course IN high contrast mode, for example: ... an image that she couldn't quite erase all the white around a character and makes it look awful when sitting on the Dark Blue background
...oh and side note: what's up with NOT being able to Insert An Image??