I forgot to mention how I would deal with the transparency problem. Below is a quick and dirty method. There is some smoothing/dilation, but in my opinion it is an acceptable trade-off for increased color accuracy.
- Select trace
- Object > Ungroup
- Path > Outset
- You may tweak this by using. Preferences > Behavior > Steps
Outset paths by 1px:
PS To make the features less rounded, maybe outset a bit larger than 1px, then inset back to 1px. Again, my computer is super old, so I will let you try it.