Well, that's certainly good news! Here are the resources I plan to work on. For the most part this is a splitting of the "Dye" and "Spices" resources into multiple resources to make the Dye and Spice trade more interesting. I will work on Coca and the Spice resources first, as I feel the Spice Trade is too important to world history to be simplified into a single resource, much like Gems became multiple resources in C2C.
Allspice
Brazilwood (Timber used primarily for making bows of string instruments, and Brazilin Dye)
Cinnamon
Cinnabar (Produces Vermilion and Mercury)
Cardamom (Maybe)
Cloves
Coca
Cochineal
Cutch (Dye)
Dye-Murex (Produces Tyrian Purple Dye)
Fustic (Used primarily for Khaki Dye)
Ginger
Henna
Indigo
Liquorice
Logwood (Dye)
Madder (Dye)
Nutmeg
Peppercorn
Saffron (Spice and a Dye)
Sassafras (Maybe)
Sesame
Sunflower
Tamarind (Maybe)
Turmeric (Maybe)
Vanilla
Category for obsoleted European Dyes (Kermes, Woad. This is a working idea. It may be better to just represent these as buildings that provide some sort of primitive dye resource. I'm not sure if it's possible to have a building obsolete when access to another resource is gained. This would be to represent things like Woad going obsolete when Europe gained access to Indigo, and Kermes [Crimson] going obsolete when access to Cochineal was gained. This may be more trouble than it's worth, ultimately. This is definitely the lowest priority.)
Edit: Also, thanks to Koshling and AIAndy for making this possible in the first place. When it comes to Civ4 mods, C2C is definitely running at 100% research with some talented science specialists to boot.