I agree with this 100%. I do not like unnecessary food dyes, colourings, sweeteners etc. I understand there is a market need for things to look and taste amazing and that ultimately trumps it.
Mark Schauss has made comparisons between food dyes and paint. Some coloured capsules taste like a tub of paint smells when you leave it on your tongue.
Personally I would prefer clear capsules. There is information out there on food dyes and studies in rodents linking to kidney, testicle and bladder damage. Why bother colouring capsules if you don't have to?