I'm not familiar with Dico white, but they make a pale grey that is a fine AlumOx. It works very well but is pretty fine, in line with Ryobi white. If looking for toothy, they make an excellent black compound that is a larger abrasive. I don't have the part #s in front of me but can get them tomorrow.
I have never used their green, but from speaking to one of their sales reps they consider it to be of the highest quality and size distribution. IIRC they discontinued manufacturing the green CrO a couple years ago (maybe not, that's what the sales rep told me) so what's out might be all that's left. I'd certainly take a chance on it if not ridiculously priced. Is made in house and their light grey and black are plenty good.