You need to give more info on exactly how you processed. Temps, what you use as a base amount, what pump you use, how long you process, and so on. The color of the feedstock in no way matters, it's the titration number.
And for az.scarecrow, you need to check your titration too because there is no way once used oil cooking fish should titrate at 6-7 unless it sat in the dumpster for a year or so in the heat before it was processed.