Holiday lights for all occassions

How is this for an anoying product idea? Holiday lights that automaticaly change colors based on the calendar to provide seasonaly appropriate decoration to one's house. Christmas in white or multi color, 4th of July in red/white/blue, Halloween....you get the picture. Hang ones and anoy your neighbors all year round. (P.S. Maybe an experienced blogger can help me out here. Where is the spell checker? I understand blogs to be a more casual form or writign but spelling mistakes like this last one are really anoying to proofread. Are there any built-in spellchecker add-ons for Movable Type??