there are tons of online recipes that use Certo brand pectin and food coloring.
here's a recipe that is more involved, but does not use pectin (I don't know why some people don't like pectin ???) and it uses cranberries for color.
http://simplyrecipes.com/recipes/jalapeno_pepper_jelly/
You could also boil chopped cranberries in vinegar to get the color into the vinegar, strain the vinegar and then use that in one of the other pectin recipes. Take note of the amount of vinegar you boil (start with more than you will need) and measure it after it's boiled. You don't want to start with the 1 1/2 cups of vinegar needed for the recipe and then end up with only 1 1/4 cups due to evaporation.