How many different colors of lightning are there?

Lightning comes in every color of the rainbow(Red, Yellow, Green, Cyan, Blue, and Violet, to name a few). It's almost always white, but often it's tinged with another color around the edges. The three most common colors(aside from white) are electric blue, electric yellow, and "Voltage Violet." The color of the bolt depends on how hot it is; the hotter the lightning, the closer the color will be to the end of the spectrum. Infared, (red) which is the coolest to ultraviolet (violet), thus hottest. As a note, it's good to keep in mind that real lightning is not shaped like the way it has always been dipicated as, the "icon" of a lightning bolt. It is not a large zigzag that doubles back on itself. Lightning DOES take a slightly jagged path, but it doesn't change more than a right angle on any turn. Lightning will always have the tendancy to travel thus "striking" the object with the least resistance and sending a discharge from there to the ground. Objects with little resistance may include trees, buildings, wet humans,etc