That problem is easily solved. In your malware, simply use the default settings for all of those things, and you will catch the 97% of users who never customize any of it.
You can afford to lose the remaining 3%.
You can afford to lose the remaining 3%.
The accent color? If you buy a new Windows 10 machine off the shelf, after you enter your name, it asks what your favorite color is. I think blue is highlighted when that screen comes up, but you can't miss the opportunity, so 3% is a bit low for an estimate of how many people will change it.