I have a 3x3x3 foot box that I want to light up in a place that does not have access to electricity. The box will ideally be as well lit as a regular room in the evening with red, green or blue light. We anticipate using the box 4 hours a day for 7 days. Given these parameters I am trying to find the most efficient light and power source for the project. I cannot afford a generator which might limit the project to standard batteries as a power supply. If this is true, what LEDs might be appropriate/compatible with it? Is it feasible to modify LEDs that fit into standard lightbulb sockets or plug into wall sockets for use with a battery power supply?