I have a quick PS question. My wife and I are planning on getting new siding for our house. The current color of the house is dark blue but we're considering other colors. I opened a photo of the house in PS CS5, added a new layer and started to "paint." The second layer I adjusted to around 47% opacity so that the lines of the siding showed through the new color. I know this is a quick and very dirty way of trying out a new color, but there must be a another way to see the true color of what I'm painting on while still letting the architectural design of the house through. Any ideas about how to try out different paint colors on my house?