Oh no. How will I know what I'm stuffing into my face?
http://www.bbc.co.uk/news/business-24401249
Nestle has won a court battle with confectionery rival Cadbury, over Cadbury's attempt to trademark the purple colour of its Dairy Milk bars.
Anyway - Purple? I know I'm colour blind, but surely the Dairy Milk bars are blue?
Yeah, it's one of the blues that's actually purple. I have the same problem.
Thing about having dodgy colour perception, when an object's colour is completely arbitrary
[1] you won't think to question what you're seeing unless it comes up in conversation.
(The pedant in me wants to point out that Dairy Milk bars are in fact brown.)
[1] The corollary to that is where things have well-known colours which you'll override your common sense for, such as banananas[2] (which I recently discovered are green[3] when unripe).
[2] AIUI, the proper colour change of a ripe banana takes place in the UV spectrum, and us humans are just winging it.
[3] Actual green, not the green that I see yellow bananas as and generally call 'yellow'.