How can you "Remove" a Bit of "Spray Paint" from a Bath? Thank You *

That's all, I am Not 100% sure what Bath is made from, but it's a "Council High Rise Flat", so, I expect it to be the Cheapest. It's kind of "Plastic" I think, I know it's not Metal/Steel or Ceramic, I don't think ??, so, that Narrows it down a bit. Thank you in "Anticipation".