When you get in your car in the morning, do you check to see if both your Colorado license plates are still there? Thefts of Colorado plates are dramatically on the rise. This time last year, there were about 20-30 license plate thefts reported; this year, there are more than 300. Denver Police Officer Robert Gibbs advised people to report a missing plate immediately, as they're often used to commit more crimes. Also, residents can go to any of the six Denver Police Department stations to have theft prevention screws installed for free in minutes.