Hey there! If I'm correct in assuming that the colors are an ivory and gray, these might me good options:

http://www.rugsusa.com/rugsusa/rugs/surya-mds-1/flint-gray/158MDS1000-203.html/

http://www.decorspark.com/collections/rugs/products/nl-nzsg02g/

You probably want a solid color rug, because you already have a pattern. Hope these help!

-Courtney @ DecorSpark

Not sure what other colors are in your home, but something like these might work. If you don't care for the red, I think a traditional style rug with some grey and the color of your walls incorporated with other colors would look good.

Here is a link that might be useful: Pottery barn rug