Lightness Scale This value is used as a multiplier to increase or decrease the lightness of the colors in the theme using the HLS (Hue Lightness Saturation) framework. • A higher multiplier (greater than 1) increasingly changes the colors toward white. • A lower multiplier (between 0 and 1) changes the colors toward black. To Change the Lightness Scale: Type a value into the text field, or left-click and drag the slider to the left or right.