To do the colour effect, press c, fisheye effect is f, Whirl is w, pixlate is p, mosaic is m, brightness is b, and finaly,ghost is g.
I just did this for 2 reasons. 1. I had nothing to do 2. I thought you would like to know what all the effects are in scratch and know what they do without having to open up a whole new project. Hope you like it! Please love and fave!