Move paint from kitchen to bathroom? I just painted my kitchen a color green that I don't ponder...

I just painted my kitchen a color green that I don't ponder looks good within there. However, I construe that color would look good contained by my bathroom. How would I take the paint bad of my kitchen wall and put it on the bathroom wall? I appreciate the help!
Which would be better and cheaper to do?...
Answers:    You can sand your kitchen wall or paint over the existing paint, but you will want to buy new paint for your bathroom. Cut out a chip of the green kitchen wall at least possible the size of a quarter. Take the green chip to the paint store and they will match the color for you and produce as many gallons as you stipulation for your bathroom.