Our 3 colony comes out about 10:30 pm, they are in slightly darker location. Our 7 colony comes out at 12 midnight usually. but if we turn down the lights (I installed dimmer and dimming bulbs.) they come out a little earlier.
Usually the TV just stays on all night, but all other lights out, the gliders come out in TV light and play no problems.
In playroom in basement we installed dimmers, We turn it low and have tv on, but its kind of dark, gliders play in that room no problems with that type lighting.
I did notice when we first got them if lights were bright, they wouldn't want to come out.