Great piece, do you already have bedding? Does your son have a favorite color? His interests?

No I don't have bedding yet, but I did buy a gray nailhead headboard for a full size bed.

One option, keep things tone-on-tone with a subtle pop of color, like yellow or orange:[houzz=]

Another thing I would recommend--figure out what kind of bedding you want to use in there first, then choose your paint. Do bold bedding and neutral paint, or vice versa--neutral bedding, bold paint.

I love grays and oranges together. Gray and limey green look good also.

[houzz=]

This duvet would be fun, then use a throw/coverlet or pillows in orange or green.
http://www.westelm.com/products/organic-chevron-duvet-shams-g379/?pkey=cbedding-bath-sale&cm_src=bedding-bath-sale||NoFacet-_-NoFacet-_--_-

An idea of the green tone I was seeing in my head...
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I love that you're going with greys. I would go with a medium tone grey for the walls rather than a light or silvery grey because I think if the walls are too light you will lose some of the luxury feel of the gorgeous headboard.

Thanks for all the great advice. I love the idea of bringing in pop of color for the bedding. What would go well with black and grey and do u have any accessories suggestions for the decor on the walls.

http://decoradvisor.net/wp-content/uploads/2012/10/d8795__beautiful-modern-teenage-boy-room-design.jpg

blown up photos on canvas would be cool....of something he's interested in.... or a removable wall mural would be big impact.

Objects hung on the wall as art are a favorite of mine in kids/teen rooms... guitars, skate boards, hockey sticks, etc....hung in a grouping is the best for big impact also.

My bedroom is a bit older, but similar thoughts

You can also find a good interior design for your homes at http://www.mylivingroomideas.com

teal and turquoise as accents in the boys' room? Some inspiration: