These concentrated gel pastes come in a range of colours, which means you can bring your cake decorating dreams to life. Use more or less depending on how dark you want the colour to be. As the pastes dry your colour will darken slightly so a little goes a long way - which just means you'll have these pastes last you through a lot of bakes.
For ease try to use a toothpick to dip into the gel paste and then add into your edible medium for a mess free and easier method. This also means you can accordingly create different shades.
With so many colours on offer the choice is endless, get creative!