The Ikea Trones shoe rack can be painted. A special primer or paint must be used to paint this product since it is made from polypropylene.
To paint the Ikea Trones shoe rack, it is best to use a paint that is made specifically for plastics, such as Krylon Chalky Finish Paint. If the desired color of Krylon paint is not available, an alternative is to use a primer made for plastics, like Rust-Oleum. Then a normal paint can be used over the primer.
Before painting the shoe rack, be sure to wipe down all surfaces and let it dry completely. Then spray a thin coat of primer or spray paint.