Let’s talk lights! Lighting the tree is one of those things that can divide families. Any divorce court judge will privately tell you “Irreconcilable differences” really means “light fight.” First, there’s the white or colored debate. Then, there’s technique: stringing or strangling. Then, just as you kiss and make up beneath the mistletoe, there’s a pop and the tree goes dark. Sound familiar? Catch me on the CBS Early Show, Saturday morning, December 4, 8:14 a.m. I’ll try to help.