Only natural color can be colored. As a general rule it is easier to darken the hair than to lighten the hair. Blonde hair has been bleached more so more caution must be taken.We highly recommend having your hairdresser dye the hair as you will get the results you want, coloring them yourself always may ruin the wig.all other colors were dyed by us,so you can't dye again unless you remove the colors we dyed on,but we colored hair permanent.If you can`t get to a salon, always use a good quality hair dye and test a small sample first.