Getting dye off a white wall. Possible?

[WindowGazers]

I had some coloured feathers in a pot on a shelf in my bathroom. Moved them to clean the shelf and have noticed that the dye from the feathers has stained the wall. Is there any way I can get this off before I go and buy a load of white tester pots?

I would try that white block/ magic eraser they sell in tesco, wilkos. It’s the only think I’ve found that will get rid of stains on emulsion.