Funny Blonde Joke

There was a blonde who wanted a promotion at work, but her employer denied her the oppurtunity because she was blonde, so she dyed her hair a light brown colour, thinking it would do the trick, she would try it at work but first she was going to try it on the general public. So one day, she was in the countryside, and she pulled up by a farm, there was a farmer tending to some sheep, when she asked, "if I can count how many sheep are in your field, could I have one."
"That is a deal, young lady," he replied. So she counted them up and finally counted them all.
"126"
"Well young lady, a deal is a deal, take your pick"
She was walking back to the car when the farmer called. "Young lady, if I guess what colour your hair really is, can I have my dog back??"