How to use the @mapbox/mapbox-gl-style-spec.Color.parse function in @mapbox/mapbox-gl-style-spec

function updateStyle() {
    const element = map.getTargetElement();
    if (!element) {
      return;
    }
    const layout = layer.layout || {};
    const paint = layer.paint || {};
    background['paint'] = paint;
    background.id = 'olms-bg-' + paint['background-opacity'] + paint['background-color'];
    const zoom = map.getView().getZoom();
    if (paint['background-color'] !== undefined) {
      const bg = getValue(background, 'paint', 'background-color', zoom, emptyObj);
      element.style.backgroundColor = Color.parse(bg).toString();
    }
    if (paint['background-opacity'] !== undefined) {
      element.style.opacity = getValue(background, 'paint', 'background-opacity', zoom, emptyObj);
    }
    if (layout.visibility == 'none') {
      element.style.backgroundColor = '';
      element.style.opacity = '';
    }
  }
  if (map.getTargetElement()) {

let value = (layer[layoutOrPaint] || emptyObj)[property];
    const propertySpec = spec[`${layoutOrPaint}_${layer.type}`][property];
    if (value === undefined) {
      value = propertySpec.default;
    }
    let isExpr = isExpression((value));
    if (!isExpr && isFunction(value)) {
      value = convertFunction(value, propertySpec);
      isExpr = true;
    }
    if (isExpr) {
      const compiledExpression = expressionData(value, propertySpec);
      functions[property] = compiledExpression.evaluate.bind(compiledExpression);
    } else {
      if (propertySpec.type == 'color') {
        value = Color.parse(value);
      }
      functions[property] = function() {
        return value;
      };
    }
  }
  zoomObj.zoom = zoom;
  return functions[property](zoomObj, feature);
}