That is true, black is recessive.
What confuses people is the dominant allele for many loci gives black coloration by default. Doesn't mean the black is dominant, just means by default there is no other color for the "non" (i.e. "non-blue", "non-mink", "non-biege", etc) to be.
There are actually a couple colors that are dominant (or co-dominant) besides agouti, but for the most part the majority are recessive.