That’s the point @docwisdom… I’d like it native so it’s a feature request.
I have a couple of device that I created with different background colors about 6 months ago for my fireplace and my outdoor Xmas lights. Obviously only used them in winter. I noticed a couple of weeks ago that the fireplace switch was displaying on and it wasn’t. I played with it a bit and couldn’t seem to get it to work right. That’s when I noticed that the device type had been updated. So I updated my personal device type and then it worked.
Not terribly hard to do, but it will be a pain if I end up with a bunch of different personal device types that I have to update every time SmartThings changes stuff. Ideally I see it as the same sort of thing as icon. You go into settings, tap change ‘on color’, pick your color, and done.