I just wanted to share my husbands great idea. We have columns up in the party area that he built last year. There are 6 of them. He mounted yard lights to the top of them...the kind that you stake into the ground along your sidewalk. We wanted to make the lighting be green instead of white, but I didn't want to fork over money for new colored bulbs or tinted glass. We came inside last night after working in the haunted trail all day. He went to pour himself a Mtn Dew and had one of those "light bulb" moments. All of a sudden that two liter bottle (which was green) was being mutilated. He went back to the columns, unscrewed the tops, and slid the green bottle down around the outside of the glass, but inside the frame of the light. Now, our lights are green and it cost us nothing! They have really nice green glow. Anyway, just wanted to share...