SWM2012,
to the Keystone Forum. You didn't say what year Springdale you have, so a couple of suggestions. If it's less than 2 or 3 years old, many members have been able to contact Keystone, send/email them pictures of the defective decal and Keystone has replaced the decal free of charge, however the member has been responsible for labor to remove the old one and install the new one. There are a number of threads already posted on that process and also how to remove/install decals.
If your RV is older than 3 or 4 years, one place to buy decals is EBay. There is a front decal in Blue/Gray currently for sale for about $20. You can view it here:
http://www.ebay.com/itm/Decals-Stick...0bbf1c&vxp=mtr
If that isn't the decal you're looking for, do an EBay search for "springdale decal" or for "RV decal" and you're sure to find many others to choose from.
Again, welcome to the forum.
John