Thought Grey is the best choice .. but a light shade of Mocha wall paint may look good with this too ..
This color magenta is really bright and it will start looking overly done if the wall has a bright color too .. hence it must be something soothing and neutral to balance out the sharpness of magenta ..
Obviously Grey color looks more pretty in that setup. The pink color bed furniture looks beautiful and there are wide range of furniture available in the market. The bedroom furniture gives the more pretty look to the home.