I think I'm done with this here widget.
That's how it looks, in this final incarnation:
and the widget itself here: XorBar 1.0
Just download the file and unrar the contents into the LCDstudio directory. Run LCDstudio, open the configuration and enable the "Xor Bar" plugin. Exit LCDstudio. Re-run LCDstudio. It should be in the toolbox, under "spock Widgets".
Please try it and let me know how it works.