Here are the possible solutions for colorful beam used in light shows clue
Answer
Clue
Relevancy
laser
Clue
Colorful beam used in light shows
Definition
a source of high-intensity optical, infrared, or ultraviolet radiation produced as a result of stimulated emission maintained within a solid, liquid, or gaseous medium
lased
Clue
Used a light beam on in surgery
Cut with a light beam
Definition
LASE, to use a laser
auroras
Clue
Colorful sky shows
Definition
AURORA, (Latin) a luminous atmospheric phenomenon
fogbow
Clue
It's formed by small droplets and shows white rings (unlike its colorful rainy counterpart)
Definition
a nebulous arc of light sometimes seen in fog, also FOGDOG
