Accessing local WidgetFillColor from Global Rackspace

This is a pity.And I need it the other way around. The Global Rackspace script should be able to read the colors and transfer them to an external controller via SysEx. I need this way to transfer the colors to my DIY controller.
Since my son is working on an extension to connect the controller at the same time, I hope that the color information can at least be transmitted there…