30's should fit right in the typical "happ" size button hole right?
Happ buttons are 28mm. The 30mm buttons might fit with a squeeze, or at worst a simple mod.
If so I'm holding off buying buttons until they show up (please get some pastels so we can have something a bit differnt).
I think if you have the matching sticks the "funny" color buttons will be more popular than most would think. The "kids" with their console joysticks and candy cabs would probably be more into that too.
I'll take that "kids" remark as a compliment. I'm doing my best to hold on to my youth as long as possible (much to the wife's dismay).
But you are right - the pink/green sticks will be very popular with the Candy crowd. I'm sure the word will spread on shmups.com, shoryuken.com, neo-geo.com, atomiswave.org, etc soon enough.