BBCode [color] not working in signature

[Nooooooooooooooo]

So I wanted to update my signature, but the game for some reason wouldn't let me use the [color] BBCode on this specific link. I don't know if it has something to do with my link, or if it's just a bug, or whatever.
Here's the picture:

As you can see, the

Code: Select all

[color=yellow]

is showing, but the

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[/color]

isn't.

EDIT: I was missing another [/color], all is fine.