Greek Fire

I recently came up with a very cool feature, at least in my opinion. Greek fire! It is said that Greek fire was so hot it could burn underwater, and would actually ignite upon contact with water! I was thinking that this fire could be green, to add another colour to the lanterns and campfires. This would have the added benefit of looking like floo fire from Harry Potter. So as a list, Greek fire would:

• Burn underwater;
• Be Green;
• Add more colours to the lanterns, torches, and campfires;
• Add more light sources;

• And possibly be a throwable object, like a splash potion, but it would make a small-medium fire upon contact