Agreed! This is why we exist.. we want the small businesses of the world to have the same fighting chance to be known, recognized, grow sales, and create jobs locally.
A lot of folks these days stay away from logos on clothing, and would likely prefer their coffee unbranded.
However since you got into YC, it's likely youve shown that a signficant number of small shops would want this, and that a decent business can be built. Good luck!