Baby Curtains Redecorating Room: How Do I Change The Colour Of My Curtains With Out Changing Them?

Redecorating room: how do I change the colour of my curtains with out changing them? - baby curtains

Hello, I wonder if anyone knew a quick, (relatively) cheap to change the color of my curtains ... Currently, I am back in my room and the theme is black and dark purple, and my curtains are baby blue, a sort of foundation. I thought the spray paint in black or dark purple, but I do not know if that might work, because I do not know of spray paint.
Other ideas or concepts of spray paint?

Thank you!