Red Sweets

It's a well known fact that red sweets are more than likely going to be the best tasting. Skittles, Starburst, Haribo(not including eggs), Refreshers etc.

This leads me to ask, why is the ratio of red sweets to other colours always less!? Everytime i have Skittles, because i eat them in specific colour order (save the best for last), there's always half the amount of reds to yellow. The same happens with a packet of Starburst or Fruit Pastels.
People don't buy sweets for the yellow ones! If i was a sweet manufacturing company i would exploit this fact and sell packets full of only red sweets. I'd be a millionaire!