We've put some gels on our lights; tungsten to daylight conversion. Dave was finding that he had to push the raw exposures harder than they should be pushed to correct the colour. HDR does some pretty whacky stuff; one picture will come out great, and another nearly identical one, with the light moved slightly, will come out dark and murky. We're learning some stuff though.
On this one, I crudely photoshopped in some haze. I think I like it.