Dyeing nappies

Just bought some fabulous pre loved fluffles but they are quite grey, thinking of adding some Dylon colour, anyone had any luck with that,?
I reckon the terry cotton ones will dye great but will I just make the microfibre look worse??!

Cotton dyes great but microfibre wont absorb the dye so they may go a tinge of colour but thats all

I dont the microfibre will dye that well either. But...it may enough colour to get rid of the grey iyswim x

Mf doesn't take the dye so I wouldn't personally.

Hmm...maybe a bleach then? Do a stain remover wash then a strip wash? They work so well I don't want their appearance to bother me about using them everywhere not just at home!