private ColorRGBA lumensToColor(ColorRGBA color, float lumens) {
        ColorRGBA brightnessModifier = lumensToColor(lumens);
        return color.mult(brightnessModifier);
    }
Convert a floating point lumens value into a color that
represents both color and brightness of the light.

@param color The base color of the light
@param lumens The lumens value to convert to a color
@return A color representing the intensity of the given lumens encoded into the given color
jme3-plugins/src/gltf/java/com/jme3/scene/plugins/gltf/LightsPunctualExtensionLoader.java