I wouldn't be concerned with matching up with the colour system of any machine, or digitising program for that matter, as they all have their own 'formulas' for displaying shades, and one brand is not the same as another - it's a technical thing. Whatever colour the design is saved in, you will use the colour you like. I would also recommend using colour catchers when washing, as some threads do run. I've just had some hand dyed red thread run on a white fabric.