I heard that you can't adjust light levels... I'm not sure if that includes daylight. I've never tried. And congradulations! I wish my first Lucid Dream was that vivid and understood. My first one came when I was much younger and I dreamed (dreamt?) that I was being chased through various brightly coloured corridors by monsters. Then I realized I was dreaming and began happily jumping out of their reach on vines.