Sets the color of out line. Definition of out line.
The default color of out line is 0xDD380C:
// the parameter can be a string like "#FEF504" or a hex number 0xFEF504
controller.setExportColor("#FEF504");
//controller.setExportColor(0xFEF504);
controller.setExportColor("#FEF504");
//controller.setExportColor(0xFEF504);