Cheers for the responses. I have to drive at least 50 miles one-way to have this done (yep, really), and I'm going that way today, so I didn't want to make a special trip. So definitely appreciate the quick feedback before I leave.

Since I know blue/red are okay, preferably blue but could do red in a pinch, it'll all work itself out. And, for all I know, I might encounter a photographer who knows what I'm talking about. Which would be pretty helpful.