Are strawberries really dyed?
Strawberries turn a natural red color in their ripening process. This is usually a very strong, ruby-red color. Rest assured, strawberries in the US are not dyed. FDA clearly lists all adulteration done to fruits (oranges can be dyed), but strawberries only has a regulation of when the product is considered moldy, etc. Note that even though dyed strawberries may not be sold in US, they may be exported in countries that permit it ( fruit intended for export is exempt). 

Rest of the world is a different story. It wouldn't be uncommon for you to  find strawberries that are picked too early in the process, or are just grown in poor conditions that are dyed red to give it the luscious red appearance. There have been anecdotal reports of this in China - this color comes right off when washed, showing a white strawberry. Strawberries do leech a red fluid when washed, but that shouldn't result in a white strawberry.