Does anyone cover their tank at night?

Do any of you guys cover your tank with something at night?

My tank is in my living room where people often are.  After the tank lights go out there are constantly lights going on and off near by (me turning them off, my wife turning them back on ), the TV flashing, etc.  I feel like this disturbs my animals and fish when its supposed to be their time to sleep.  I wish there was a way to not interrupt their sleep schedule, but it seems impossible without covering the tank with a blanket at night.

Part of the problem lies in that I want to be able to view the tank during the hours when I am home in the evening, so I have adjusted their lights to be on later than the real daylight schedule outside.  To accomplish this I have sunrise start late at 11am, with night beginning at 10pm.  I run into the problem that light infiltrates the tank much earlier than 11am (from the windows, lights being turned on in the house, etc) and often after 10pm.  The only way I've found to fix this seems to be covering the tank.

I don't mind doing everything in the dark and always keeping the blinds shut when the tank lights are off, but I don't think my wife is very keen on the idea, lol 

I don't particularly like covering it, as its ugly and a fire hazard, and I am not home at the correct time to uncover it in the morning due to already leaving for work for the day.  So covering it by hand doesn't appear to be the best solution for me.

Am I the only one in the hobby who worries about stuff like this?  Just curious if other hobbyists have thought about this or have any solutions.  Or if you just let the fish deal with whatever your own sleep schedule is?

I agree with what's been said above. Adjust the photoperiod by extending lights out to midnight and don't worry about it. If the light system, whether fluorescent or simple LED, has multiple power plugs use separate timers to shut off the whites and leave the blues running. That's a common practice. If using fancy controlled LED's, extend the dawn-dusk effect a couple hours or set the moonlight to be much brighter until midnight.

The fish are going to get up with the sun anyway because even indirect sunlight through slits in the blinds is enough to tell them dawn is breaking. Plus they are hungry. Then at night, fish actually start shutting down and tend to start sleeping at sundown, even with the artificial lights on. Have you ever noticed Cardinals sleeping in the daytime? Fish don't have eyelids but they do have a way to partially shut down their optical system. Of course it's never turned off completely. Move around in front of the tank at night and notice the response.