- What is the least hottest fire color?
- What is the hottest thing in the universe?
- Why blue flame is hotter than red?
- Is Violet the hottest color?
- Is blue the hottest flame color?
- Is white fire real?
- How hot is the flame from a lighter?
- What is the hottest part of a lighter flame?
- What is the coldest flame color?
- Are coals hotter than flames?
- Where is the hottest part of a fire?
- Why do flames burn blue?
- What color flame is the hottest?
- Is there black fire?
- What does a blue flame mean?
- How hot is a blue gas flame?
- Is Blue fire real?
What is the least hottest fire color?