Another word for light meals is "snacks." Other terms that can be used include "appetizers," "small plates," or "light fare," which typically refer to smaller portions or less heavy food options suitable for quick consumption or as a complement to a larger meal.
Another word for "light" as in not heavy is "lightweight."
I have had meals at a few nice restaurants but I am no gourmet.
incandescent lamp
Not heavy, soft
illuminate
dim
Cyan.
Enlighten.
Refraction
solar
Diffusion.
Another word for bright is shining or shimmering maybe that is what i think