I have same thing on white. It's a pita to keep clean. I was told you need to have the ceramic treated with something in order to protect it. I guess with that its ok. I would go for black one rather.

Thanks for all the great ideas everyone and sorry I didn't explain the polycarbonate a bit better :) This is along the lines of what we'll be using... http://www.psp.co.nz/building-brands/corrugated-sheeting/suntuf-polycarbonate The area is an absolute sun trap and we're hoping to use it as an extension to our living space, especially on rainy days! I've just sent my husband out to get a few pots of different stains for is to try - darkest brown (cedar) and a lighter brown (rustic oak) both by Cabots + the black we already have. Hopefully we can decide between one of those! I probably should have mentioned we will have black aluminium pool fencing running along the top of the second retaining wall - so the real question is do we keep everything black (pool fencing, horizontal fence, retaining walls and pergola) or do we go with a dark (or even light) brown for the pergola and retaining walls.... We just keep going around in circles at the moment. Decisions, decisions! Thanks again :)

Sorry I am so late coming to your site - you are an inspiration to all, homeowners and advisers alike. For your planting advice, I suggest you call Merrifield Garden Center to see if they will come out your way. They currently have wonderful garden centers in Merrifield and Fairfax (both in Fairfax County) and a new one in Gainesville, but they may come further south to wherever you reside. (www.MerrifieldGardenCenter.com) Even if they don't send designers to your area, they are worth a trip to see their huge selection for a day of pleasure and inspiration, or to pick up some plants. Most of my clients are in the Fairfax and greater Washington area, but I am currently living out west below Front Royal, VA on the Shenandoah mountainside - wonderful views. cascio.offsite@gmail.com

There are more cons than pros, I'm afraid. Near black floors will show every speck of dust and need constant maintenance. They also will suck up a lot of light, so you need to add lots of extra lighting. If they are shiny, they also show marks just as a mirror does. They are not the best for re-sale properties either, as most people prefer something more medium toned for the long term. I recommend going with a more classic floor, and then adding black accents in furniture, etc. Your kitchen could be mostly white cabinets with some very dark stained sections. Here are some ideas from modern to traditional. Click on the pictures to enlarge them.