London police testing invisible spray
                                
                                
                                    (Newser) -
                                    A luckless thief in London was caught not red-handed, but green-faced after breaking into a police "decoy car" equipped with a dye trap, the  BBC  reports. The 28-year-old, who stole a laptop and other items from the car, was arrested when the system alerted police to the theft and...