I made some pink grapefruit marmalade yesterday. It's a very pretty soft pink. It's the first time I've ever made marmalade, and it took forever. I used a recipe from the The Joy of Jams, Jellies, and Sweet Preserves that someone on this site recommended. You boil the rind three times, each time changing the water. Then, you cut it up into very thin slivers. It tastes wonderfully, looks gorgeous, but it only made three small jars. Truly, it's worth it's weight in gold.