Is there a Sanskrit basis for the concept of "red boddhicitta"?

On several occasions I have encountered the term "red boddhicitta" in scholarly literature on Indian tantra, but am having trouble locating the Sanskrit term for this concept. I tried googling रक्त बोधिचित्त but nothing comes up; then again, I don't reckon google is indexing Sanskrit all that carefully. I'm not very familiar with the primary sources at the moment, but I gather there are Sanskrit texts that may mention red boddhicitta. I seem to recall one piece known as the Nectar Tantras but I couldn't find a text or translation of it.

Question

Are there any Sanskrit sources that explicitly used the term "red boddhicitta"? (any text from Indian tantra tradition would be sufficient)