/**
* Method to get the transparent color information from a NodeInst.
*
* @param ni the NodeInst to examine.
* @return an array of Color values. Returns null if no such data exists on the NodeInst.
*/
public static Color[] getTransparentColors(NodeInst ni) {
int opt = Manipulate.getOptionOnNode(ni);
if (opt != TECHTRANSPCOLORS) return null;
Variable var = ni.getVar(TRANSLAYER_KEY);
String transparentColorsStr = (String) var.getObject();
int colon = transparentColorsStr.indexOf(':');
if (colon >= 0) transparentColorsStr = transparentColorsStr.substring(colon + 1);
if (var == null) return null;
Color[] colors = TextUtils.getTransparentColors(transparentColorsStr);
return colors;
}
