I am not sure if I am like many of you but my darkroom has to do double duty as my office/computer/digital workstation (for commercial photography). Black and White traditional is for me. Turn off all of the lights and there are all sort of "parasitic" lights on. I was thinking I could take a blank and throw it over but then the air flow would be distributed. I tried a lightproof changing bag and could not standing it. Am I left with turning off the myriad of devices that generate those little blue/green/white LED lights. Or, could I use gaffer's tape to cover them up? What have other's done? Thanks.