So I went.
And I am so glad I did.
I met some lovely people, most especially Gay, from http://www.lallybroch.co.nz. Who I feel I have known for a while, but never met in real life!
Christine started off by showing us how to do a rainbow dye with some clean fleece.
It was steamed over heat for around 40 minutes and once it was done it looked like this
Then we had a go at dyeing some skeins of wool. Christine had got some ready for those of us that didn't have our own. This is the colour mine was before I dyed it - a sort of dark fawny brown.
By the end of the day I had 2 skeins of wool to take home. One had already been 'cooked' and I did the other one here. I'm really pleased with how they've come out.
Here's my 2.