Tim, Orange lights are a courtesy light more than a warning light.
If the light was red id say see a mechanic but its not red, it's orange.
So, it isn't serious and all your external lamps work.
Considering an Auto elec works for roughly $80 an hour and a new set of incandescent globes costs $20 wouldn't you be better off all round getting your hands dirty and replacing every single external non Halogen globe first?
You know... Brake lights, Park lights, Day Lights, Indicators, Numberplate lights, fog lights etc?
Access instructions are in the owners manual as well as locations and even pictograms showing how to im betting.
It is in fact so easy that my Wife replaced every incandescent globe in her car and without my help and her car is a station wagon in which the rear globes are a bugger to access.
Unless of course your fingers are painted on.
My final suggestion is that perhaps the relay module that senses the current draw needs removal and contact cleaning or replacement and I believe from memory this is located conveniently in the fuse box with the other relays.
Your owners manual will also be of great help with the location of this item which you can clean/repair or replace.
