It's like the forties again

Is it possible to find back seam tights that aren't 30 dollars. 

Such as these American Apparel ones. 

I know during World War II, models at fashion shows would paint lines on the back of their legs to give off the illusion that they were wearing nylons. I wonder if there is a D.I.Y. way to do it on actual nylons. Is that weird?