Fortunately or unfortunately, I am plenty hairy on my toes.

But you're right... it could be all related to one thing -- or several issues. Or it could be a non-issue and just some quirk. I can live with numbness and blue toes. I do want to rule out scary things like MS and spinal tumors so will go back to the neurologist who was going to order a cervical MRI. After that, I think I'll just wait and see. I figure it'll either go away, or it will stay the same, or it'll get worse and some new weird symptom will come up which will make everything obvious.

Anyway, thank you for your advice! I'll come back and post if the numbness is ever figured out.