Apple Wallet - Accessibility Feature: Two Cards - Same Bank, Can I change background color for each card?

Apple Wallet:

I have 2 cards from the same Union, I need to differentiate them by color. Due to my old eyes, it is a pain to read the different Card Numbers - and I do not have my glasses allways at hand.

As I understood, the images are provided by the credit institutes...so no way to change them.

BUT:

Apple can add a feature to set a background color for each card, so the background color changes when you select a card, like a green background for bankcard "A" - the standard one, blue for "B" and so on...

It is a fact that lots of software is not really accessible if you have bad sight - like popping up Information when you start an app - no glasses by hand and you just wanted to show your tram-ticket starting panicking because of the stressy situation - holding the phone in one hand, and holding yourself on the tram with the other - now while riding you have to unpack your glasses because an app "wants something from you"...dangerous.

So pls, just activate Background colors in Wallet, so we don't need to read and just recognize by colour which card is active.

Would be a great Accessibility Feature.