Great find!
Shame someone jumped the fuse. You'll want to look for a sams photofact. These pretty much give all of the service information necessary to work on them.
You can pull the leads of the power transformer and check the windings with a high resolution ohm meter to make sure the transformer is still alive. If not, there is probably someone here with a parts chassis that can help you. Hell, if I can get a power tranny for a 1963 packard bell roundie, the ctc-7 shouldn't be too hard to get
At minimum you should replace all of the main power supply electrolytic capacitors before even attempting to operate the set. A shorted cap would have caused the main fuse to blow in the first place. Also pull the chassis and remove the high voltage cage (big tall metal cage with holes in it) and look at the condition of the flyback transformer. If you see a big puddle of wax, chances are its a gonner.
The colorama is a rebuilt tube. Colorama was RCA's designation for a rebuilt tube, Hi-lite was for a brand new tube. You might want to check the CRT emission too to make sure its still usable.
If you're in the southern california area, particularly San diego county I would be glad to help you with the set. The more of these we can preserve and restore now, the better