Just received the Man With No Name trilogy Blu-Ray boxset that was released in Hong Kong 13th of May. The boxsets to be released in other countries in June should be the same as far as image goes. Below are few comparisons of the A Fistful of Dollars disc with the Italian disc by RHV. I will add some more images later here http://www.spaghettiwesterndvds.com/movies/a-fistful-of-dollars-per-un-pugno-di-dollari/screenshots/ but these three will do for now.
MGM (HK disc) left, RHV Italy right (if in doubt check the filename):
As far as the colors go, the poncho was originally green/olive green according to Eastwood.
Notice the cropping on the MGM disc. Quite a lot of the image is missing from the sides and top and bottom depending on the scene.
The MGM disc of A Fistful of Dollars is available separately from Hong Kong as well as the “sequel” For a Few Dollars More.
Also remember the previous post about the For a Few Dollars More Blu-Ray discs.