Gel food colours are highly concentrated and will give you a bold colour without the addition of excess liquid, unlike liquid food colours. You only need a few drops of gel food colour to give you the colour of a teaspoon or more of liquid colour.
Americolor Soft Gel Paste
Bright White
21g, 6oz, 20oz
Over The Top
Gel Paste Food Colouring
Various Colours - 25g
VIVID
Professional Edible Gel Colours
Various Colours - 21g
LOYAL
Professional Gel Colour
Various Colours - 20g