But you have to be careful. There are good mixes and bad ones. Your attempt to "add dimension" could backfire huge if you don't have the scheme worked out well.
When I was working at my first LA job and had little money as I had just purchased a house, I was forced into replacing my driveway on account of a main line plumbing disaster. To save $, I bought "seconds" pavers, which were basically small-quantity-leftovers from prior manufacture. As there wasn't enough of any one color to do the job, I had to mix. During the installation, I discovered that while the pavers were all the same size -- the basic "Holland stone" brick shape -- they WEREN'T ACTUALLY all the same size! Some colors were like 1/32 or 1/16" shorter or longer than other colors, which you would not be able to tell just by looking at them. It seems like such a small size difference wouldn't matter, but in fact, it caused me a lot of grief, as at that time, I was obsessed with perfectionism. When the size difference was multiplied over many bricks, such as in the width of a driveway, it caused a noticeable discombobulating of the pattern. In the end, once the joints were filled with sand, and we were just using the driveway, it became quickly forgotten about (contributing to my relaxing about perfectionism over time.) This spurred me on to looking at a Google Maps picture of it now. I see the colors have faded enough that it can barely be discerned that it's a mix. (It was charcoal blending to red.) In the end, I'd say it's not worth bothering with if you can avoid it. I think a better use of more than one color is as a contrasting border, like piping on a suit.
[Gardengal, note my luscious looking English ivy ... the tip of the iceberg. :-) ]
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