Interesting thread on Slashdot about flavours of things.
Basically arguing that nowadays, after having been exposed to artificial flavours for so long, people expect, say, red things to taste a certain way, even though that taste isn't typically much like any natural flavour (e.g. strawberry or cherry). So the things just taste "red".
(On a related note, I typically expect banana-flavoured things to taste of banana flavour, rather than of banana; the two are fairly different, at least to me, but banana flavour certainly tastes recognisable and I'd identify it as "banana flavour" even if it doesn't taste much like bananas.)