So, I would like to suggest it (a real dark theme, not a workaround). Some advantages:
Improved Readability of Text
Better Contrast
Reduced Eye Fatigue
Less Flicker (if existing issues)
Less Blue Light
Less Prone to Triggering Photophobia
Can Save Small Amounts of Electric
YouTube, Reddit, they all have it. The list grows everyday.
IPCT used to have a full dark mode before the Xenforo software update. The new version only has the sub header and footer color scheme options.
Although I like the option from the update to flip the sidebar to the left