We sang this version in Ireland in the 1950's:
There's a lady on the mountain, who she is I do not know.
All she wants is Gold and Silver and a nice young man I know.
Take your partner, take your partner, go to the church love, kneel down love, say your prayers love, come home love.
Open the gates and let me through!
Not 'til you show you're black and blue!
Here's my black and here's my blue!
Now open the gates and let me through!

This was sung in a circle of girls and 2 would pair off outside the circle and follow the actions of the song (kneeling, praying, etc.) and show their right leg for the black and their left leg for the blue. After that they could join the circle.