Dark text theme should change button

[mylespalmer]

Steps to reproduce:

Visit homepage

Actual result:

The button when the dark theme is used is white.

Expected result:

I think it would look better if we flipped it so the text was white and the background was black, matching the text on the left.

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Source URL: https://companion-studio-eta.vercel.app/

Issue details: Open in Marker.io

Browser	Chrome 101.0.4951.64
Screen Size	1728 x 1117
OS	OS X 12.0.1
Viewport Size	1703 x 968
Zoom Level	100%
Pixel Ratio	@​2x