Thanks for your feedback. Previously, I suggested a simple change which improves the user experience. Please check this post.
Please see the attached image. I have 4 Polygon RPCs in my wallet. When I click on the upper left corner, it shows the one I had selected before.
I agree that the UX could be improved if the shaded color of the selected network is different. However, as I have shown in the attached image it displays the correct selected network RPC.
Try to add more RPCs and place another network RPC among the two with the same network and then it will be more distinguishable.