I've already received quite a few replies from those interested. I'll check out some vendors this weekend and report back with pricing.
As for the design, I think the coolest would be a solid black umbrella with a red Debian spiral centered around the "peak" of the umbrella. I'm not sure that's possible, however; most of the custom designs I've seen are a simple logo on the outer edge of a single section (like this: http://www.neathrfc.co.uk/images/golf-umbrella.jpg). We'll see. --M. Kirchhoff
