I got mine through Superbrightled.  I went with the multi-color strips with controller and tied into an accessory switch.  I replaced my dash lights in red and primarily keep the led strips in red also.  
I also put some plain white ones in the engine bay and tied into the courtesy lights.  Really helps to see in that deep dark cavern.  So now I use the multi-color led strips as courtesy lights and primarily use my original courtesy lights if I need to access the engine bay.  Obviously, you need to protect the wiring in the engine bay to ensure no potential for sparks.  
Here are some crappy cell phone pics:
Multi-color strips in red:

Multi-color strips in blue:

Multi-color strips in green:

Multi-color strips in white:

Controller mounted under helm:

Two white led strips mounted in engine bay:

I'm real happy with the way this all turned out.  And it's still going strong 5+ years later.  Good luck, have fun and be safe!