Yeah, just using radioshack as a test bed to get the bride (the one in charge) to make a choice (white lights in colored lanterns, or colored lights in white lanterns).  For the actual items, I’ll buy them online.  In fact, I believe I’m going to start with this assorted pack from microtivity on amazon, it has the three colors we’re interested in, as well as a ton of extras and resistors.
Last question, (for now)… I could also put a 
3-pin slide switch in to use as an on/off button on this, correct?  Rather than have to teach my aunts (who’ll be setting up the venue that afternoon) how to make throwies?
 
Thanks for the quick response.