Just a thought - you may want to see how easily they will dye before buying loads of dye - I tried to dye a wool jumper from that 'creamy white' colour to dark green and despite following the instructions exactly only managed to get to 'creamy/white with a hint of very light greeny tinge'.
I had searched on the internet but various websites were decidedly non-commital when it came to wool - so I gave it a go.
Not sure if anyone more expert can advise but I thought I'd share my failure . . .![]()