Pitcher Glove Rules: Is Yellow Stitching Legal in Fastpitch?

Question
http://www.wilson.com/en-us/fastpitch/gloves/a500-game-soft-fp12/

Pitcher using the glove in link in a game.  Umpire casually advised the glove was illegal due to yellow stitching.

Is this an ASA rule???

Answer
The rule says a pitcher can use a multi-colored glove as long as one of the colors is not the same color as the ball.  In my opinion, you have a single colored glove with yellow stitching.  Obviously this rule is open to interpretation.  I don't understand why a manufacturer would make a glove like this unless they had had it ok'd by the different associations.

Personally, I would not determine the glove to be illegal, but I am not your umpire.  It is probably time to get out the sharpie marker and turn the yellow to black!