If that's your truck and house...I'm not giving you any ideas just out of spite...
LOL I know right. ColoradoSigns, what ever you are doing, you are doing it right. Maybe you should be telling us what to do on our company vehicles.:ROFLMAO:
All kidding aside what does your logo/brand look like. I would start with that and come up with a design the works well with it.
Without seeing your logo, and going off of only your name, this design comes to mind:
http://www.borgeslettering.com/lettering_and_logos1a.html
I'm not saying you should copy Mr. Borges, but I think that theme would work well with your name.
Or, if you are wanting to incorporate some of that yellow? What about a nice warm rock theme for the background. That would look nice with the yellow truck. Just make sure what ever type of background you go with, it doesn't overpower the message. It needs to support it.