Spaces and ground surfaces

The bluish colour of the above picture is awful, sorry about that. My phone was on funny settings when I took it. It's the plaza in front of AIB bank headquarters in Ballsbridge. They've done a beautiful job. I think it's a really nice space now.
There's something that just clicks when the correct ground surface is chosen. Another example is Collins' Barracks. I'm sure people don't even pay attention to the pale salmon finish there - it's the perfect surface. Subtle, unnoticeable and succeeding in placing the emphasis on the buildings surrounding the space.