Re: @Lotaresco
"In when you're out" - I saw some funny coloured LED lamps on sale just the other day; I was wondering why they seem to have that strange reflector-like shape until it dawned on me these are supposed to project a randomly flickering muted RGB lightshow onto your wall - not entirely unlike the one made by a turned-on TV set in a room - for the benefit of "legally-challenged uninvited guests"...