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.