Try in the Scripts tab at the bottom while running the game. I think you can configure it there. If not, you'll have to do it manually by opening the script with any text program. Heck, it might be in controls for all I know.
I Have the noob skin on my home computer. You can download it on the-construct.net website But the if you download that one you might not be able to see it because it doesn't have an alpha layer so it shows up chrome most of the time. So either download it and add the alpha layer or wait till I get home and I'll post the version that I added the alpha layer to.
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You can then use the GUI to add some options, I'd suggest add 110 and remove the others.