I really like the simplicity and way this encompasses the nature of the event. Bravo! Could you try using something that looks like the palette we have in on our Pinot's Palette logo. You can find it at www.pinotspalette.com. It would also be fun to incorporate our tag line "Paint. Drink. Have Fun." beneath the Art Tasting wording.
It might also be fun to see how "Paint. Drink. Have Fun." would look if it was incorporated into the palette you have on this design.