I think people often choose colors because they like the colors, and don't always realize what it will do in a whole room, they can't appreciate that blue is not as welcoming (whatever good things it does do) in a living room and may come off as cold, or at least not very warm at all. And I think a red interior door would be awful (but that's just me :-)!

Hi Pam, did you look at the Living Rooms thread in the Gallery for inspiration pics? There are some blue ones in there.

So how about using a pillow cover like this for inspiration?
You could use olive and butterscotch accent colors...

http://www.potterybarn.com/products/vanessa-pillow-cover/?pkey=cgreat-deals-pillow-covers

Or a few of these? They'd tie in your navy couch and pale blue walls quite nicely.

Here is a link that might be useful: PB pillow covers

I stumbled on an article about turquoise on Oprah's web site last night.

"Blue-on-blue is a great way to incorporate turquoise into your d�cor and is, at the same time, a typical maritime combination that Leatrice says has retro appeal. There are many different shades of blue you can experiment with�from soft pastels to rich, deep shades�so be creative and inventive in your initial designs, she says.

Other cool tones that work well with turquoise include violet, which creates a stunning combination of two complex colors (green-blue and red-blue), and yellow-green, which results in a look that is both clear and striking."

Here is a link that might be useful: Touched by Turquoise: Pantone's 2010 Color of the Year