What causes heater burning with yellow-blue flame

Vanguard burns with a yellow blue flame.
Asked Dec 19, 2009
It's caused by the elements that are being burned off. Examples: If you burn platinum, the flame will be white (don't stare into this flame, you will burn your retinas right off and go blind), if you burn copper, it's a green flame, and I believe iodine causes a flame to burn brown.
Answered Dec 19, 2009

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