Dark mode, with a cool splash of purple for the highlight color. Something about the tinted glass appearance of dark mode mixed with the distinct contrast of the deep purple, just puts both my mind and my eyes at ease. Plus dark mode has one of the best default palettes for a terminal I've seen.
My work machine, a MacBook Pro I like the Lite, I have the Apple cinema display and the shinny glass screen reflects like a mirror with dark mode same with the MacBook Pro glass screen it glares. I do like the dark mode at night with the room dark.
On my hackiintosh I like dark mode with my LG non glare monitor.