Mould on a cardigan - how to remove?

[Pennies]

Today I found a bag of clothes in DH's car that had obviously been put in there damp and have gone a bit mouldy.

I've put it through a wash but there are black stains on the cardigan still. How do i get them out?

The cardigan is pink (can I use a bleach solution without taking the colour out/) and is cotton knit.

[MrsBadger]

vanish