By colored fire I assume you mean a fire colored with a product or chemical. If so then yes it is harmful to ingest marshmallows roasted over said fire. The chemicals in said product/chemical compound can cause irritation of mouth, esophagus and gastric system.
Roasting marshmallows over a campfire is an example of radiant heat. The heat is transferred from the fire to the marshmallow through electromagnetic waves.
Chestnuts Roasting on an Open Fire
a metal stick with a handle will do just fine!
Yes, heating a pot over a stove is an example of conduction. As the stove heats the bottom of the pot, the heat is transferred through the pot's material. Roasting marshmallows over a campfire would also be an example of conduction, as the heat from the fire is transferred directly to the marshmallows.
the sugar in the marshmellows can catch fire
...chesnuts roasting on an open fire....
Chipmunks Roasting On an Open Fire was created in 2000.
Roasting over a free fire (the fire spits out burnt little pieces of wood)
THE CHRISTMAS SONG (Chestnuts Roasting on an Open Fire)
Chestnuts were roasting over an open fire.
Simpsons Roasting on an Open Fire was created on 1989-12-17.
Are marshmallows alive? if so, you'd be a billionaire for discovering that..