CoolCatPinball I own a GnR: Standard Edition and it's my first ever NIB. I personally have a lot of issues with my game including chipping and reading this thread is pretty much the final nail in the coffin for me. I'm thinking of offloading it onto another person with mods for $9k. There is a lot of stuff I'd rather not mention on Pinside out of respect for various parties but this stuff shouldn't happen.
I also however have a BSD like you do and I also begrudgingly gave Mirco more money for a playfield and a set of Radcals. The cabinet looks good with not too much fade but if I'm doing a playfield swap, you might as well do the cab as well. Now when I got the Radcals and pf I was in awe of how good it looked just like GnR. That being said I didn't notice this purple hue and I will have to check it out the next time I see my BSD (it's not in my house). I'm waiting for a rotisserie to be shipped out then I will start the restoration.
In the meantime do you think you could go to Kinkos and scan the artwork and digitally alter it then print out a decal?