Short exterior cat5 runs from attic to security camera – what’s the proper way?

Due to my soffit construction, I have to mount my cameras on the exterior rafters, so the wiring can’t come out through the camera mount hole. As such, I’ll have approximately 2 feet of cable running along the soffit before it gets to the camera.

Should I just staple / cable clamp/screw these cables as-is right to the soffit and call it a day? Should I use some sort of junction box? Is conduit really necessary? What if my cat5 cable is a bright ugly color?

Thanks