The flame color depends on what's being burned and how hot it's burning.
火焰的颜色取决于燃烧的物质和燃烧的温度。
TED-Ed(视频版)
The type of molecules in a fire can also influence flame color.
火焰中的分子类型也会影响火焰颜色。
十字小溪(下)
Somehow " autumn" does not seem properly used of Florida. There is a connotation in the word of flaming color, of sharp change, of hoar frost heavy on cornfields, of all of northern harvest.
A flame test is an analytic procedure used in chemistry to detect the presence of certain elements, primarily metal ions, based on each element's characteristic emission spectrum. The color of flames in general also depends on temperature; see flame color.