Tonguez
A suffusion of yellow
Thats why I’d go with not a wolf - the PCs might not even realise theyre facing a werewolf when they track their creature or find its claw prints changing into foot printsI'd just make it a werewolf that has fur colors tinted to match the scale color, but keep it subtle.
I typically do not want the Werewolf form to hint at he humanoid form's true nature as I tend to use non-wererat lycanthropes as part of identity mysteries - at low levels the PCs have to figure out who the werewolf is before it gets more people, and at higher levels they have to figure out how many werewolves are in the town.