Thank you for your response.
It's the most recent version:
Product Version: 18.104.22.168
Build Date: 3/31/2017 11:44:54 AM
Stitch view is Symbols and Blocks. I did discover, after posting this, that only Block viewing shows the colors as they should be at 200%. However, I would think viewing at 100% would also be just as dark, if not darker; yet, the image appears the same as the Block view.