What about modding the ones you already have? There are quite a few plastic bonding spray paints on the market now. With a little light sanding, and some good spray technique, they could look like factory equipment... Just my 2 cents.
I did that, i used Dupli-color "trim paint" on my center console and doors (door pics being upped shortly). After seeing a taco bell cup, the paint was coming off. And i did it really good too. I'm pretty sure that if i dind't use the cupholders, it'd be just fine the way they are, but I use em, and i dont like how theyre gonna look after extended use.