Yes, this works. The acrylic ink can be mixed before dried. For tips and techniques on how to mix the colours see https://www.edding.com/ideas/manuals/acrylic-basics/tips-and-techniques/ . The nibs of the edding acrylic markers get coloured, however. Nevertheless the nibs can be cleaned easily by writing on a separate piece of paper. If the nibs get too dirty over time due to extensive mixing, there are spare nibs for the acrylic markers broad, medium and fine available.