Yep, that would definitely work. Functionally that does give me what I'm looking for. But graphically it doesn't. I don't want the whole map with all the other state outlines and the international borders and all that. I only want it to show those specific 13 states.
You may have already seen this:
Shawn Wallwork 's suggestion to switch to dark
and change the border color did seem to at least
reduce the prominence of the hover.