Script access to iTerm's theme

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• iTerm2 version: Build 3.1.4.beta.1
• OS version: macOS High Sierra 10.13.1 Beta (17B42a)

I was wondering if there was some way to script the theme for iTerm2 from a proprietary escape sequence or OSA. I looked through the documentation and scripting dictionary and couldn't find it, so if this is already possible I'm curious how this can be done.