You may already know, in 2011, the fancy Ram 1500 radios were mostly the RHR 730N, a few came with the RER 730N
The RER 730N came mostly in the 2009 & 2010 Ram 1500s
There is very little difference between the 2
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I don't know if you can just change the background color, like the color behind the radio screen
You can change the image itself, from a Ram to almost anything else
you could even take a Selfie & put that pix as a background
all the images are stored in the
Menu, under
My Pictures i think
look at these sites
http://www.driveuconnect.com/system/2011/ramtrucks/ram_1500/touch730rer/
& even better this site
http://www.chrysler.com/en/owners/quality/rer/
on this site, under the Downloads section, you will see
Media Center 730N (RER) Manual
Page 67 briefly mentions what you can do with pictures
I believe that i recall someone mentioned that when they updated the software to the newest RER software, they had a background color change, but that may have been on the RHR software
Good Luck
My current radio is the RER 730N in my 2009 Ram 1500