Too Much Grey - Is it Possible?

So on my weekly pop-in at Home Sense I came across a king sized duvet cover in the sale bin that I thought was pretty cool:

It reminded me of the fabric that was on this cover of Style at Home that I loved (but when I looked into it I realized it was CRAZY expensive!):

So since it was such a steal, I thought I'd go for it and try it out. Now, I wasn't sure about posting this picture because we haven't finished decorating the master bedroom, but I'm not sure about the duvet so I'm going to go for it. Here it is during the day (sorry I didn't straighten it out - I'm such a ghetto decor blogger):

And here is a picture from farther away that I took when the sun was down - here is where you can see that we don't have a headboard, proper side tables and that I clearly just threw it on top of messy sheets :-):

So do you think it is too much? The cover is reversible and the other side has the charcoal as the base with the trellis pattern in white, but I thought it was too dark (you can see that in the photo of the package above).

I figure I will have to add a pop of colour to the room now - we still have rug, accent pillows, side tables and drapes to go. Any colour suggestions? Turquoise? Yellow?

Anyways - looking forward to see what you kids think!