need help with material nodes- accidentally tampered with them Having trouble with blender. I had just managed to make a material on the walls as pictured, iridescent and shiny. I have somehow messed with the nodes and now it has turned black and looks completely wrong. I will attatch pics of before and after and the nodes. Could anybody tell me which part I have tampered with to ruin the image? desperate to get the original material back as I have a deadline tomorrow.
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Here is a much simpler node set up for you. 

Essentially all you are seeing is the noise texture. You dont need all that other stuff. 

Also the sockets have to plug into the same color (you can break this rule sometimes, but not in your case.)

 



You can use something other than a noise texture to have a different type of bump.



Or even better just use this set up since you want shine and bump.