you just go to regular editor and fill one side with a color, then the other side with another color and then go to the grey gear and click the paper with an arrow going down on it. then go to the beta editor and go to the grey gear and go to the paper with the arrow going up. load the file you just saved. then click the blue rhombus with two arrows going up and down and zoom into the two colors (Around the middle) untill its blended.