My first one I named Reggie, for Python Regius. After that I've gone with my favorite female names from sci-fi for my girls, and my girlfriend seems to end up naming my males. Hence: Stormy "cause he's kinda grey" for my male mojave, Lemmy "He's yellow like a lemon" for one of my Pastels.
for my females:
Zoey, River, and Kaley: from Firefly
Aeon: from Aeon Flux
Marry: Marry Gay Potter from The Forever War. my favorite book
Leela and Amy: from Futurama
Sil: from Species