Enums with string values return the enum key instead

[justinrusso]

Given this enum:

public enum Stage {
 Colorless = "colorless",

 Red = "red",
 Green = "green",
 Lime = "lime",
 Blue = "blue",
 LightBlue = "light_blue",
 Gray = "gray",
 LightGray = "light_gray",
 Yellow = "yellow",
 Purple = "purple",
 Magenta = "magenta",
 Pink = "pink",
 White = "white",
 Black = "black",
 Brown = "brown",
 Cyan = "cyan",
 Orange = "orange";
}

Attempting to use Stage.LightBlue results in a value of lightblue.