FWIW: My DVD of "Rome Adventure" is not a brown mess. My TV has several different settings for color saturation and two of them would make it a brown mess. I've chosen one that brightens things up and this movie, along with other WB titles that get blasted for being brown, looks just fine.
The skies are blue. Troy's eyes are, too! The scenery is spectacular and natural looking. Been there, seen it, and know it to look exactly as depicted on this DVD. The buildings are the actual colors in reality, and the tile roofs are that wonderful clay-red shade I see on the DVD.
When Troy and Suzanne are travelling "up north", there are a couple of scenes of them in riding along a road bordered with Italian pines...all of which were shot around Rome and used, willy nilly, for filler in the northern segment (northern Italy looks nothing like central or southern Italy).
Does any of this mean I think it has a Technicolor pop? No. I've never seen it like that. I doubt many others have, either. It looks better than any version I've ever seen of it, though. And that's more than tolerable.