These whimsical peacock prints from etsy came to mind when I saw your turquoise tile and purple ottoman.
http://img0.etsystatic.com/il_fullxfull.247096504.jpg

You don't seem one to be toned down, with the likes of that ottoman. :) A very bold and cheerful style, yet you've kept it sophisticated at the same time. Very nice. Are you in the UK?

Perhaps a pop of the purple over the grand fireplace -- this painting is too small, and probably not your dog, but you were looking for cheeky! Perhaps this or another artist could render something larger, personalized for you.
http://www.ebay.com/itm/ORIGINAL-POP-ART-PAINTING-Pug-Dog-Purple-by-Artist-A-V-Apostle-16-x20-/251042535731?pt=Art_Paintings&hash=item3a734d1933

Also not toned down:
http://www.rugs-direct.com/ShopDetail/Details/149698/RugsAmerica/Torino/Leopard3863/LightBlue

I don't think you need to tone it down at all. In fact I think more of that heavenly lilac (or purple/magenta) needs to be added into the mix!

For a rug, you have lots of options. Here are a couple I can see working in this room depending on the direction you want to go:

http://www.rugtycoon.com/Rugs/nepal_tibet_oriental_rugs_622/nepal_tibet_oriental_rugs_622.html?cid=63

http://www.outdoorrugsonly.com/detail.asp?id=26214&sku=WPT7303&mode=ADD&prc=S000

I love how this room is coming together and like both the peacock and bulldog suggestions.

I have to run right now, but will see if I can find more rug examples later.

You need to put a large bold piece of art above your mantle, get rid of the bits. Look for artwork that has the blue and purple in it, also white, you need it so your fireplace is the focal point and not just lost on that very high ceiling.

HI - WOW , I love everything you have done so far - no toning down - keep going - you could add a few shots of coral or some more peacock blue or teal . Restoration Hardware has the perfect mirrors for above the fireplace . They have the zinc framed ones or the fancy all glass. Pottery Barn has some great amethyst glass decor items. Put your family photos in a grouping on a wall some where. You said your interested in an area rug -- are you sure you need one ? Are you getting rid of the carpet you have now ? If so, consider a modern silky shag in a grey , maybe ? If your doing drapes get whispy textured gauzey plain off white material hung from as high as you can go over the whole window wall from a big chunky rod .

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In addition to rug and picture......
Have you considered drapery panels for that wonderful arched window? I think framing the window could be important to the overall balance of the room. Silk panels in that fabulous violet color would be awesome. good luck on a great room!

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You need hardwood floor large planks, to anchor your room. Not dark stain, but maybe a darker pecan stain would really compliment this room, don't do window covering until you have done the floor, because it will change the type of treatment you want on your window big time.

If you don't want to do hardwood floors, then get an area rug to put on top of the carpet that is already down, I see from the picture you have that same carpeting in the other room in the picture. Also need to change your lamp on the table by the window, does not go with the room design at all.

Loving your replies - thank you! Marie, purple silk drapes are a fabulous idea. And Lefty47, now I'll have to decide between wispy ivory and purple silk. (Life can be difficult.) Barnhartgallery, we live in Seattle, Washington USA. Thanks again to each one of you for taking the time to reply.

Artwork ideas for above your fire place:

http://www.gallerydirect.com/art/product/m-drake/abstract-figure-iv
http://www.gallerydirect.com/art/product/justin-garcia/iridescent-nature-i

I have bought several pieces from this website, it's a great option for budget-friendly art. Love your space!

HI - Thanks janescriv --- For the drapes you could have the lighter ones for the summer and the silk ones for the winter . Or how about Lavender Velvet drapes or an off white or a greyish blue. Now I have added to your confusion.

my boyfriend is an artist and I think his andy warhol photo collection or some newer collage photo's or paintings would look fantastic! His email is dmgamble@mac.com

You've got a gorgeous fireplace; I'd anchor the furniture around it so that there's an intimacy to the seating area (two chairs to the left--when looking at the photo's perspective, can come in closer), the couch also a little closer in, and the wooden chair slightly forward. You need to unify with color--the peacock pillows would add splash--a vibrancy and warmth. You also need to "ground" the area with artwork that's larger in scale above the fireplace. Why not take the existing pictures and put them on either side, lower? Or, you could use those on the walls on either side of the room's opening... Just make sure they're visually balanced. The room has great bones--and with the cathedral ceiling, you want to emphasize its height/elegance while keeping the overall look readily accessible and warm. (Large ceilings and formal architecture can be beautiful but look inaccessable in terms of coziness if you don't "weight" in appropriately with your accessories.) Think of the entire room in terms of balance, harmony, and movement of both color and scale.

Also, you don't want to "slice" the room in terms of furniture placement; the photo doesn't reveal how big the room is beyond the couch. A sofa table with a pair of lamps would anchor that area... but I don't have enough info. to tell...

Think of how you use the room. Are there children? Do you use the room daily? Also, as is, the branch on the right carries too much weight--there's too much going on in the right side of the room, so it's a bit off balance. Think about adding a tray to the ottoman, a few artbooks (three), a vase of flowers and an interesting object on top of the books... Cozy it up and bring the eye in to smaller views/vignettes...

Back to work! Thanks for a fun diversion...

P.S. Your carpet looks like it's high quality and has a "refined" look--careful if you put a rug/rugs on it...

what a fun room!! ART, ART, ART, window treatments-where are you located???

Change the wall paint. Pay attention to the small details as that will take you far. Pop some art on the wall (maybe with some real vivid colors like that ottomon).

I agree with "domain 123" that balance harmony and scale are extremely important. Looks like you may be going for an eclectic look? Love your color palette and the ottoman is a great piece. You mentioned "cheek" and with this room it certainly looks like you could run with it. Can't see a 360 of your room but here are a few ideas given what I can see ... 1) ground the room (attached) with a dark area rug, perhaps an animal print with a field of black or deep navy and stripes of a similar color to what you have on the wall with a quality pad to protect your carpet. 2) large piece of art for over the fireplace similar to what Andrea Schumacher had in one of her award winning rooms (attached) 3) get rid of the branch in the corner 4) move the two chairs and table to the left side and float them (no lamp, perhaps a sculpture of a peacock), move the couch to under the window and place two tables on either side with table lamps, 5) put the beautiful ottoman in the middle with a large tray for serving drinks, tea, cognac in the evening, books, etc ... 6) Can't see your ceiling but looks like a cathedral so think of this -- get rid of the two sconces on either side of the fireplace mantle and install a very large chandelier that hangs over the ottoman for some major drama 7) some pillows on the couch to carry the lovely peacock colors onto it 8) solid silk pinch/french pleated taffeta drapes (straight large rod across very top of your curved window and puddle them on either side) in the same color as your two chairs and fireplace surround to move the color around the room (if you place the two chairs opposite) or perhaps a color a few shades darker than the paint in your room. This looks like so much fun!!! I hope you post once you've completed your room!

Here's an idea on the drapes (I accidentally posted a .pdf which didn't work).

Maybe not the right quality if you're interested in a peacock here or there, but here's a lovely sculpture for a table top. http://www.amazon.com/dp/B005FG771O/ref=asc_df_B005FG771O1987478?tag=thefind0108694-20&creative=395261&creativeASIN=B005FG771O&linkCode=asn

Or one to set on your fireplace hearth for that eclectic look.
http://www.lampsplus.com/products/Woman-Holding-Peacock-Aloft-Sculpture__M2838.html

Littlemissk, JoJo, and 123domain- great ideas for balance and grounding. And the links help too! Off I go to look for peacocks.

saw this pic this morning and thought of you

Looks like you are getting great advise, I would just be repeating what others have said already,...so onto another project!!

Thanks, Melibd and Karen.