-$panel-header-inner-border-color: adjust-color($panel-base-color, $hue: -6.522deg, $saturation: -6.098%, $lightness: 4.902%) !default;
-$panel-header-color: adjust-color($panel-base-color, $hue: -5.639deg, $saturation: 38.347%, $lightness: -63.725%) !default;
-$panel-header-background-color: adjust-color($panel-base-color, $hue: -3.522deg, $saturation: 6.402%, $lightness: -4.51%) !default;
+$panel-header-inner-border-color: adjust-color($panel-base-color, $hue: 0deg, $saturation: -6.098%, $lightness: 4.902%) !default;
+$panel-header-color: adjust-color($panel-base-color, $hue: 0deg, $saturation: 38.347%, $lightness: -63.725%) !default;
+$panel-header-background-color: adjust-color($panel-base-color, $hue: 0deg, $saturation: 6.402%, $lightness: -4.51%) !default;