Limewash (lime-based paint) for indoor or outdoor use (N1)

I've had to have some parts of previously very damp walls on this old house re-rendered in lime, so the new render can only be painted with limewash - not acrylic paint, which would stop it 'breathing'.
Does anyone by any chance have any leftover limewash to spare? I need it in a pale colour - white or something like magnolia would be perfect.