Since I'm pretty skilled with a printer and we're on a serious budget, FI and I bought a printable invite kit from Wilton. Our colors are purple and silver, and we had difficulty finding a kit we liked that fit that scheme, so we ended up going with a neutral set with ivory borders on it (in addition to the fruitless color search, FI really fell in love with this set, and since he cares about very few details I've been trying to jump on anything that elicits a strong positive reaction from him!).
Originally I had thought about buying little purple ribbons or sequins or rosettes -- something to attach to match our colors. However we are now getting to the stage where we are both exhausted from work and with planning, stressed about expenses, etc., and I'm not sure how much I really care if our invites have purple or not as long as they look nice. Our colors are our school colors and we're getting married at the school, so I don't think there will be much confusion or surprise there....Am I missing any major reasons that I *have* to get purple on these things?