Weddingbee boards

Has anybody used the "designer wedding rice" that is shaped like little hearts or the "lavender wedding rice" or have you seen these items used at other weddings?  I really want our guests to toss something at us as we leave the church, but I can't really decide which of these to use?  Do you think the lavender would stain my dress?  Does the "wedding rice" really dissolve or will we have to sweep it up?  Anybody...please post your ideas, experiences, and opinions about these two things!  Thanks in advance!

<span style="font-size: 8.5pt; font-family: Verdana">I've seen both options on different seller sites online as well as bubbles, and I'm still undecided and I don't have any experience with any of them.  I think the "rice" that I have seen is biodegradable, so you probably won't have to worry about cleaning it up, but I would still check with the manufacturer and your site to make sure. 

Thanks guys...anyone else have any insight into what we should have thrown at us?