You can observe colorful light emission in fireworks and in different sorts of chemicals as in Lithium it turns green when heated.
they are light colors :))
The air particles in the air mix with the light, causing it to be colorful
The airbag light would have nothing to do with emissions. If they are doing a safety inspection, it would fail.
Yes if it is emissions related.
The answer will depend on emissions from what? The sun, for example, emits light, uv rays and neutrinos.
No
Emissions
because your emissions need controlling, pretty basic stuff here
If the emissions light turns on there is a problem with the exhaust system. The oxygen sensor, erg system and exhaust should be checked for any leaks or malfunctions.
It will fail most tests if the light is on.
Auroras