function spectrumChanged(event)
        {
            var colorString = /** @type {string} */ (event.data);
            spectrum.displayText = colorString;
            colorValueElement.textContent = colorString;
            colorSwatch.setColorString(colorString);
            this.applyStyleText(nameElement.textContent + ": " + valueElement.textContent, false, false, false);
        }
@param {!WebInspector.Event} event
@this {WebInspector.StylePropertyTreeElementBase}