After having one tour of the material room the other day, I'm trying to change colours on a dress today. Only I'm mixed up. Earlier today I succeeded. The Diffuse and Specular colours were the same as the dress. So I changed them and the dress changed colour. However, the dress I'm trying to change colour on now, has a different colour in the Diffuse and Specular areas plus a whole bunch of nodes that the other dress didn't have. I want to change the colour of this dress to a bright blue, or yellow. Can someone tell me from this screenshot, what changes I have to make in order to change the colour of the dress? I don't know how to do clothing textures so that's not an option for me.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi