How can I change brackets styling when I switch themes?

[mosfetish]

I've tried putting the style rules under a specific theme group in workbench.colorCustomizations but that throws an illegal property warning.

Is there a way to switch brackets styling when I switch my theme? I often switch between light and dark themes during the day and the brackets style on one looks bad on the other.

[shellscape]

Please open an issue on my fork of this extension https://github.com/shellscape/vscode-shellscape-brackets and I'll implement support for light and dark styling.