All the big names have surface mounts that can accomplish this. I'd say go with mPowers like Dave said, they have a very small profile and are very bright. You could also go with Whelen T-Ion DUOs that have the same low profile look.
If you're not a stickler for paying for the brand name, the Abrams Flex-12 is fully capable of overriding, dual colors, and is high quality. It'll fit on any universal LP bracket too. https://www.fleetwarning.com/abrams-flex-12