Aircraft colour, non-standard phrase-ology, type confusion... Sorry, I can't accept any of the above excuses. Maybe a student in a 22, but for a 109 pilot - na, sorry. If you're flying a 109, then you've been around long enough to recognise a 737 from a learjet. You've also been around long enough to understand, and have used, non-standard radio terms. As for colour - come on! Against a mountain or forest, maybe, but on a runway?