I do not know brand or type, but at a company I worked with before they used a paint that worked for this. You need a paint that can only be removed with something that dissoves/softens the plastic case as well. With such a paint, removing the paint you also remove (the top layer of) the plastic. Such do exist, a comapany I worked for earlier used such a paint.

I have to prepare some boards for a presentation
can you not just use 'any paint' for a "presentation" and solve this later?

Erik