The worst kind of contamination you can find is Trichoderma Harzianum. This mold is white at the start and the green that you see are the spores of this mold. If any green color shows up in your kit, it is lost and you should not open the bag anymore to prevent cross-contamination to your other kits. If this happens please make sure to contact our customer support at firstname.lastname@example.org before throwing away the kit so our staff can have a look at what we can do for you.
pic 1 Trichoderma Harzianum