Invalid teamcolors throw an NPE in the console rather than an error message "invalid color"

/scoreboard teams add
2013-06-01 15:59:45 [INFO] Usage: /scoreboard teams add <name> [display name ...
]
/scoreboard teams add server
2013-06-01 15:59:50 [INFO] Added new team 'server' successfully
/scoreboard teams option color pink
2013-06-01 16:00:01 [INFO] No team was found by the name 'color'
/scoreboard teams option server color pink
2013-06-01 16:00:06 [INFO] An unknown error occurred while attempting to perform
 this command
java.lang.NullPointerException
        at hr.d(SourceFile:264)
        at hr.b(SourceFile:138)
        at y.a(SourceFile:52)
        at hz.an(SourceFile:289)
        at hz.r(SourceFile:257)
        at net.minecraft.server.MinecraftServer.q(SourceFile:397)
        at net.minecraft.server.MinecraftServer.run(SourceFile:331)
        at gp.run(SourceFile:573)
/scoreboard teams option server color
2013-06-01 16:00:13 [INFO] Usage: Valid values for option color are: black, dark
_blue, dark_green, dark_aqua, dark_red, dark_purple, gold, gray, dark_gray, blue
, green, aqua, red, light_purple, yellow, white and reset
/scoreboard teams option server color pink
2013-06-01 16:00:17 [INFO] An unknown error occurred while attempting to perform
 this command
java.lang.NullPointerException
        at hr.d(SourceFile:264)
        at hr.b(SourceFile:138)
        at y.a(SourceFile:52)
        at hz.an(SourceFile:289)
        at hz.r(SourceFile:257)
        at net.minecraft.server.MinecraftServer.q(SourceFile:397)
        at net.minecraft.server.MinecraftServer.run(SourceFile:331)
        at gp.run(SourceFile:573)