Multicolor LED conversion?

Yes, I have interconnected sections, but not in the manner you suggest. The multicolored strips use a 4-wire circuit, so the factory wiring will not work. The required wire is available, as are the connectors which snap onto the wire and the strips. So Yes it is possible, but not with the factory wiring. You may be able to snake the new wiring in place using the factory wires to pull it with, depending on how it is run. Should work, and as you can fine tune the color, you may be able to find a color that works for you. one work of caution, the cheaper strips tend to lose a color section occasionally. Using them inside should be better . Don't buy the cheapest ones. The tend to have some failures included.