| | Crude oil components | Glow color |
| | Aromatics | Blue; blue and white; and light blue and white | | Oily bitumen | Yellow, yellow-white, light yellow-white, green-yellow, light green-yellow, yellow-green, light yellow-green, green, light green, blue-green, light blue-green, green-blue, and light green-blue | | Colloidal asphalt | Mainly orange, brown-orange, light brown-orange, light orange, yellow-orange, and light yellow-orange | | Asphalt | Mainly brown, brown, light brown, orange-brown, light orange-brown, yellow-brown, and light yellow-brown | | Carbonaceous pitch | No light (all black) |
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