Sounds like a great idea, Canuck! I've been out of the SS for the last month or so, so eager to get back in. Thanks for volunteering to organize.
Theme suggestion: Mardi Gras/Carnival? (Ash Wednesday is 21 February.) I don't even know whether this season is celebrated in Australia, but here in the southeastern U.S. (mainly along the northern Gulf coast), Mardi Gras activities have already begun, and the purple-green-gold color scheme is cropping up everywhere (see my avatar). Hmmm, not sure how that relates to cycling, but we could use the color scheme or the traditional beads-and-feathers decor or anything else that's wild and crazy, according to the Season of Misrule.
Just a thought. In any case, I'm sending a PM as we speak.