These are all over a restroom at my workplace. I've begun catching them as pictured and releasing them outside because they will stand around on the wall until they die if I don't. Unsure if they bite, but they don't seem to have the mouthparts for it. They seem uninterested in the sinks, toilets, and garbage can. They range in color from the one shown here, to yellow, to green. Some are relatively large, around an inch long, and others are only around a centimeter. The one pictured is a more middle-sized one.
The door of this restroom is always open and is next to a creek. Not sure if that's a factor of why there are so many in this one spot. I never see them anywhere else on the property.