Verified answer

Bright and orange.

The hotter something is, the more light it emits per square metre of its surface, and the bluer it glows. So for an orange star to be as bright as a blue one, the orange star needs to be much bigger.

(Specifically, I'd probably point to either Betelgeus or Antares. They're roughly opposite in the sky so chances are I can see one or the other. There are some bigger stars visible to the naked eye from a dark site, but not in my urban back garden.)