from petroglyph forums :
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re;overflow:auto'>(Tropid - PG) Man, you guys want to stretch my memory Adam might remember better,
but if I recall the names were for the entire life cycle of the Tiberium color, such that the blossom tree and green crystals would be classified as the same type of Tiberium since they are related.
There was going to be red Tiberium and we were going to hint at it in Firestorm and Renegade, but we never got around to it.
I believe the manual included with Firestorm has the correct names.
I wrote it, but I don't remember without digging it out of a box in my storage closet
Also , no i didn't get the TS beta (Tho i would LOVE to get my hands on it) but word about this things got around due to fans asking questions to the Developers that worked at Westwood and finding clues on the files