With the pastel colors you have in your living room, you need to be careful about adding red to the mix, but you can certainly add pinky/rose tones in some pillows and then pick up the rose tones with a little bit of red in a rug. Look for a rug that has the sofa color plus some rose and a small amount of red.

I see your art has some red in it. Need to bring in a little more perhaps. Here is one that may work.

Kaleen Solomon Collection Gold Oatmeal Area Rug 5'x7'9" · 詳細

What might help you is to find a print fabric that has your green in it mixed with something pink or red. Your green is nearly a seafoam or celedon. . some of your existing pillows appear to have a lavender-y pink in them .. not so easy to mix with red.

You might want to change them out for a new fabric - use that fabric when you shop for a rug. Red comes in so many shades - you need a pinky red or plum red tone, not an orange red to make this flow. The smallest amount is likely best. Here's a quick search at calico - check beautifulfabric.com online too - they have great finds. http://www.calicocorners.com/p-9775-autumn-leaves-tutti-frutti.aspx

The other trick to pastels is that you will need a special color on the walls that works with both areas - lots of undertones to beige. You might go a bit lighter than you were thinking - a soft muslin or linen tone . . test bm natural linenhttp://www.benjaminmoore.com/en-us/paint-color/naturallinen

I would recommend introducing red as an accent rather than a central element in a motif. You could go with either an all over motif or a medallion, as long as you keep the field neutral. If you're still looking, feel free to browse our light colored hand-knotted rugs: http://www.floorplanrugs.com/collections/light

Natural linen is actually one of the colours I am considering. These are all great ideas, thank you all. Changing the pillows is a great idea.