Minty is a pastel green little pony with shamrocks as his/her symbol, and white hair. Most noticeable changes in the different issues are in the number and shape of shamrocks, as you can see if you compare an early issue with big shamrocks to a later one like the light-eyed one that features fewer and smaller ones. The light-eyed pony is an example of an Italian late issue that has features very similar to those of ponies made in Macau: almost same symbol design, same shade of body colour, light eyes, extremely long hair. Note the light-eyed issues body is greyish-green instead of pastel green (not due to fading)

A couple of different yellow bodied late issues exist. Chances are, though, that those ponies are NOT to be intended as Minty but as different - nameless? - hybrid ponies.