I have at least a single color image to use for all but two of the scenes I'm going to restore color to. And for those scenes, I have color references so I should be able to achieve accurate colors. It just remains to be seen if I can produce acceptable results with the method I have in mind.
Two of the ANH deleted scenes require effects shots. Luke and Treadwell requires a shot of a star destroyer and blockade runner in battle bracketed with the macro binoculars. The anchorhead scene requires a landspeeder racing through. They were good enough to put a filler in for the star destroyer/blockade runner so for my first draft I just added the macrobinocluar frame. For the anchorhead scene, I found a landspeeder for Google Sketchup and captured and blurred about a 1 second clip. It is passable for a draft. All the shots need to be color corrected to match the rest of the film. I also need to decide what sorts of cuts and wipes to use.
Then there is the audio track. The music is going to be fun to deal with. I just have to do better than they did when they inserted the Jabba scene.