I think it will depend on where in the very diverse climate of the Azores you reside but certainly a few semitropical species should thrive. The issue is with the presence of any fall color. Fall color is typically generated by climate and the Azores does not produce a climate that is conducive to the development of the leaf pigments that would produce those colors. You need warm, non-droughty summers, cool, crisp nights and a shortened day length that will trigger the start of dormancy. How much the Azores can accommodate those requirements is up for speculation. As well as the fact that several semitropical Acer species are evergreen so go through no color change.

I don't know if a maple could, but sweetgum seems to color just about anywhere and has some proclivity for subtropical climates.

Does sweetgum color with 50s (F) as the lowest temps?

They sure didn't color up well in my sister's zone 10 coastal SoCal garden. Just a yellow with a touch of orange before turning brown and dropping off.

Doesn't acer rubrum grow in its native range, all the way down to south Florida?