Check the Korean War-era B-29s... They were probably the most visually "satisfying" versions of the Superfort... THe had more in the way of markings, since the "U.S. Air Force" and red stripe was added to the national insignia, plus you have the black night camouflage that was added after they switcehed over to night missions.
Nose art was pretty risque' at first, but the base commander's wife at Kadena AB, Japan was quite the prude, and lots of the bombers were re-painted in order to stop "offending" her .... There's a book called "Planes, Names, and Dames" Vol II that covers quite a number of these birds, including pictures of teh "offending" nose-art BEFORE they were edited, as well as after... "Cream of the Crop" was probably the easiest one to cnsor, since the crew, in disgust, just added a black bar over the noughty bits, while "Never Hoppen" was repainted several times to meet her expectations...
Of course, there were others that didn't feel her wrath, that were just as colorful, and sometimes quite funny... "Command Decision" was one, where two of Snow White's dwarves are using the DDG some suspected the Brass at 20th AF HQused to make decisions ("DDG=Digital Decision Generator, i.e. Flipping a coin), etc.
Here's one that fell victim to the Base Commander's wife as well:
http://jetpilotoverseas.files.wordpress.com/2010/11/ourllass1.jpg?w=940&h=577
It USED to be "Our L'l A$$" until it was changed with the editing out of the "O", and the addition of panties on the "girl".
http://jetpilotoverseas.files.wordpress.com/2010/11/southerncomfort.jpg
"Southern Comfort" was another one that fell to the base "censor".. Originally, she was nude, and the cloud was a bed...
Here's another edited bird..
http://jetpilotoverseas.files.wordpress.com/2010/11/purpleshaft.jpg?w=795
Of course, if you wanna KISS (Keep It Simple Stupid) it, here's my personal favorite:
The CAF's B-29 "FiFi":
I'm biased though.. I have over 100 flight-hours in her as a GIB... (Guy In Back)
Should you go this route, I'd be happy to whip up the nose-art for ya, as one of my B-29s is going to be modeled as "FiFi" and I've already got the FiFi name decal scaled and printable..