I'm using Gravity form for a product. I've successfully removed the radio button (as I'd like to use the images as buttons instead).
The only way it indicates something has been selected, is by making the text bold.
This is not obvious enough.
Here is the site
Can I add a green TICK or somehow give the selected image a border?
Here's what I mean Screenshot
Your question is rather vague, as we don't have a lot of information about the end result. However, I've done this many times, and here's how it could be done:
I hope this helps. If you need anything else, comment below.