You can certainly find a rug or have one made to go with the art you choose without a problem. Most carpet stores will offer the service of surging the edges of which ever carpet you choose and there are thousands to choose from. Many rugs do not even need the edges to be surged like heavy shags. I do like the red or perhaps a white shag?

Could you use the same glass as behind your cooktop for behind the sink? Kitchens generally use the same material for all the splashbacks or it can look disjointed. Have a look at photos of kitchens on this site to get some ideas.

What about random/crazy paving the driveway to match what was on the pillars. Second choice the new light coloured pebble crete, exposed Ag as it's now called ,guess it depends on your budget., this is a very simple effect and the house would still be the star

I would be more worried about the roof design before I started looking at colours. It looks like it has numerous, troublesome box gutters, where two roofs run down to feed a single gutter in the middle. These then need a rain head and downpipe which are not very attractive. There is too much happening in your elevation, it needs to be cleaned up and simplified, probably with a simpler roof form. Think about how gutters, rain heads and downpipes will affect the front elevation. Save the random patchwork effect for when you are building a box-like warehouse in an industrial area where the varied colours are needed to break up the visual mass. Just as I can use word-processor software doesn't mean I can write a best selling book, and I think the same applies to 3D modelling software. Best of luck, Dr Retro of Dr Retro House Calls