I'm doing a stadium cake in a few weeks and I had an idea. For the "fans" I'd like to use red and white M&M's, it's an Alabama cake. My questions is, do you think that the color will run? I know when it's in ice cream that it does. The reason I'm going to use them instead of sprinkles is because I'm planning on spelling out either happy birthday or roll tide w/ the "fans." Do you think this is a viable option or should i try something else? Thanks for any help! 
I did a birthday cake where the sides were made up of hundred of M&M's. They did not run for me.
I did a Rupp Arena cake for my U.K. fan son, and used sprinkles for the people. I made fondant "signs" for the people to hold with the birthday message.
Here's a link:
http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1650571
Here's a great one by lara3teach that I'd saved in my favorites:
http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1492405
I used M&Ms for a cake about a year ago. I used them on the side of the cake for a pattern and to do the initials of the two people the cake was for. It turned out really cute and didn't run BUT the M&Ms did get a little chalky looking. I used IMBC and the cake had to be refrigerated. I think the cake was in the fridge overnight with the M&Ms in place. If you don't have to put this cake in the fridge you should be OK. Good luck!
For some reason I haven't seen ANY of the replies until now! I am SO suprized to see everyone's feedback, thank you!
Kitagrl tell your hubby that I said roll tide! He sounds like a keeper! haha
indydebi I will definitely be posting some pics of his cake, I'll let you know. This is the first "major" cake that I'll be doing, so it may not be quite as awesome as most of the cakes I've seen on here.
kimblyd That's exactly why I didn't want to use sprinkles! I would drive myself crazy and not be able to spend as much time w/ my bf, seeing as I'd be doing it forever!
KHalstead I actually have bought two tubs of red and white M&M's from Wal*mart. They charge an arm and a leg for them, but that's only way that I could even buy white M&M's.
Thank you so much for everyone who posted a pic showing me that it could be done. And thank you to everyone who replied and gave me advice or to just wish me good luck. I am so thankful to have found this community! Everyday I get on here and learn more and more! Y'all are great teachers! Thank you again, I'll be back again soon w/ some more questions!!!
For some reason I haven't seen ANY of the replies until now! I am SO suprized to see everyone's feedback, thank you!
I've never understood why, but if you start a thread, you have to click "watch this topic" at the bottom of the page. Otherwise, you're not notified of replies. Yet, if you just reply to a thread, you do get notified without having to click that. Who knows?! 
I know you are doing a football stadium, but I just wanted to share another m&m cake, this one is a Valentine's Day wedding cake featured on Cake Wrecks Sunday Sweets:
http://cakewrecks.blogspot.com/2009/02/sunday-sweets-valentines-treats.html
Just gorgeous!
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