It used to be very possible to do this, using the small 'pots' or tins of hand (cold) dye, and dunking the fabric into the dye bath for a shorter time than specified on the instructions; I once dyed some white lace the exact shade of grey-mauve I needed by mixing two hand dyes and doing just this. Unfortunately the idiots at Dylon have discontinued these small tins of cold dye. I have never tried to use the (needless to say) more expensive new packets of hand dye. However the old small tins of cold dye are still available online if you search for them. It is also a good chance to stock up on peach dye as well, as Dylon have inexplicably discontinued this popular shade! nb/ Just remember that your fabric will of course dry paler than it appears when wet! Good luck.