In supermarkets, you're likely to find yolks that are bright yellow or pale orange ... egg can also be influenced by yolk ...

The substance they used was the common food dye known as tartrazine, which also goes by the names of Yellow 5 and E102 when ... water which normally causes the light scattering that creates ...

Food dyes are generally safe to eat, but some people may be sensitive to dyes such as carmine, Red 40, or Yellow 5 and develop an intolerance or allergic reaction to them. An allergic reaction to ...