Thanks for all the nice comments guys.
Next up is CL-52 at the Battle of the Santa Cruz Islands on October 25th, 1942 (this is also how the ship would have appeared as lost at the Naval Battle of Guadalcanal later that November):
The only real changes between the Atlanta and the Juneau at this time period were the radar fits - Juneau having an SG surface search set on the foremast and SC air search on the mainmast. The life rafts were moved around a bit (but this was something the crew would do easily) and Juneau appears to have received shell catchers for the aft superstructure 1.1" quad mount - these are the only changes I was able to identify from the grainy photos available. I'm sure there were more but this is the best I could do, barring a huge high-res image dump from Colombamike (what happened to that guy? I was expecting at least one reply from him!)
I always thought CL-52 was still painted in its strange modified Measure 12 camouflage in late 1942, but it seems that all of the ships of TF17 were in the process of repainting into Measure 21 (all over Navy Blue 5-N). According to photo research on the Ship Model Forum, it looks to most of the researchers that Juneau was fully repainted into Measure 21 by the time of the Battle of the Santa Cruz Islands. Atlanta had only had its hull repainted into 5-N, with its superstructure remaining the familiar mottled Measure 12 modified with its mixture of overall 5-O Ocean Gray with splotches of 5-H Haze Grey. Here's the best available photo of Juneau at Santa Cruz:
http://www.navsource.org/archives/04/052/0405229.jpg
I may do a version of Juneau in mid-1942 with the famous pattern that appears in every painting, model kit, and video game. Unfortunately the exact colors are still unknown!