Well, indoors your light is straight down so as soon as the canopy is wide enough to overlap the sides, the light is no issue. Outdoors the dark bucket will heat up from the sun so covering it by hanging burlap or a pillow case or something from the top rim both shades and insulates the bucket a bit from both light and heat.Sounds good to me. Have one not far away. Do you paint them or tape them or anything or is the dark blue good enough of a light diffuser?