I wouldn't bother stripping the frame to find a Colnago cutout - My guess is that one doesn't exist. I think it would be a job no one would bother doing. From your photos the frame paint looks to be in very good condition. The down tube decals look like they have 'disappeared' where the tube is crimped. The decal probably didn't stick to that area very well when it was applied. It would be difficult to apply the decal to the concaved surface. I think the pink and silver looks fresh and suits the frame.

You could probably replace the damaged decals with 'Cyclemondo' reproduction decals. Me, I would paint in the missing parts of the decal with a fine brush - but - I have practices this technique for many years and it takes a steady hand and lots or patience.

Sorry for all my responses to this thread - I don't mean to monopolise discussion. I too would love to read what others think of this frame - my responses are only my unqualified guesses.