Give the Stationery plugin a try. https://addons.mozilla.org/en-US/thunderbird/addon/stationery/?src=search
You can make a template for these particular emails, and the plugin lets you choose to work under the hood.
I'm sorry this is not a Stylish solution as you requested....
Thanks for explaining more about what you're after. I have a couple of new ideas for you.
Forward these emails to a gmail account, where you would use a script to put these emails automatically into a spreadsheet as they arrive, which would hopefully be easier for you to scan visually.
Similar, but with IFFT (If This Then That).
Use a different thunderbird add-on called Import Export Tools. This idea isn't automatic, however. You highlight the relevant email messages and Export to your desired format. You could experiment with the different formats provided to see which one works best.