I'm good at randomness but bad at naming.
- Platypus ("website powered by platypus")
- RubberCookie (got there from cookie cutter templates)
- MeatCookie (just like the sound of it)
- RubberGuppy (try pronouncing RBGPTE)
- Guppy (drop the regex-based part)
- Gargoyle
- Template::Chameleon
- Chameleon
- GrapeBrains
- LeadFoot
- FloatingInk
- Inkpad
- AngryFuzzyHippopotamusBadHairDay
- ...I think I'd better stop.
My vote would be RubberGuppy. Probably a good thing I don't get to decide.