Will I be charged a misdemeanor or a felony on an escape charge on work release for class 1 misdemeanor in colorado

Escape from a misdemeanor sentence is itself a misdemeanor offense. And not at all a good idea, obviously. When you're already in a hole, it's best to stop digging.

You will be charged with a misdemeanor; however, the law requires the sentence on the escape to be run consecutive to the sentence on the offense that found you in work release. Very few judges would ever offer you work release again on the escape sentence, so you're looking at only straight jail time. Many DAs take into account how long someone was on escape status, so contact a local attorney and turn yourself in immediately.

Contact a local attorney to facilitate your turning yourself in and managing the additional criminal charges. Escape is a charge that seems to make DA's and judges particularly crazy so get some good guidance before you do anything else. A good attorney will spend some time preparing your mitigation for sentencing because that hearing will be a particularly tough one with an escape charge.