In Burmese Pythons some het Granites have the Puzzle pattern that is sort of intermediate between normal and Granite. Also some het Green's have an intermediate pattern between normal and Green with the space between the dark blotches being not being as much smaller than the blotches as usual (I forget what they call this, cinnamon?). But the thing is both are only seen sporadically and there are also some normal looking hets. I think the concept of fully recessive is a nice text book concept that does fit some mutations well but maybe there are some "recessive" mutations that didn't read the text books and have these sporadic co-dom tendencies. Not sure what the text books would call that though.