I absolutely love this. Lighting is a very important tool to be recognized when considering the overall look and feel of your home. Whenever I'm designing a house, I certainly take the security question into mind. Thefts are much less likely to occur in a home that is well lit. However, for me, it's important to make sure these lights do not compromise the aesthetic quality of the home. Why not have a little fun with it? You can mix and match all different colors, sizes, and locations. With so many different types of lights out there, it'd be silly not to explore a little bit.
Furthermore, I truly agree with the solar-powered lights, especially for the lighter budget. They may not pour out quite as much energy, but they're much better for the environment, and the wallet.
Thanks for the great tips.