Food Colouring Paste Vs Liquid. Liquid food coloring is usually made. Less liquid = more concentrated color.
If you're dyeing boiled eggs food colouring must be used. It is also possible to use oil-based or liquid-based recipes as well as any dry mix you might be using. Food Coloring Substitution Liquid for Gel Is there a conversion chart for substituting liquid food coloring for gel food coloring?
This lack of liquid means you can add more color to your royal icing without changing the texture or the taste.
Soft gel paste is also significantly easier to measure out than regular food coloring is.
So it has less liquidy consistency than liquid food color. I always put gel food colouring into my icing with a cocktail stick, which makes it very easy to change the colour of the icing gradually as you do it in small increments. Liqua-Gel food colorings take on the form of a highly concentrated and vibrant color gel that mix easily and provide consistent tones without altering the texture of your product.