Hi geeks, ok.. So my beauticians hair is bright pink.. Previously coloured with 6VR & SR-R and then a directions pink stainer was put on on Friday to brighten it up for Halloween! It is literally bright neon pink And now she's wanting to go dark for winter thinking a base 5/6. What will be the best way to go about this without the pink showing through? I use Martix colours.. Someone please help!! Xxx