I bought a purple pepper from Sainsbury's the other day, because I wanted to know what it would taste like.
The cashier also said she wondered what it would taste like.
It was incredibly bland.
There seems to be this dumb idea that has got into the heads of food-selling people that people care primarily what food looks like rather than what it tastes like. Just try apples from a supermarket! And it's rubbish. I don't know where the idea comes from. I'd far rather have something that looked dodgy but was really tasty than something that looked all purple and shiny, but didn't taste of anything. And I think I'm in the majority for once on this.