Candlelit Console patch set to the framebuffer console
Contributed by Peter N. M. Hansteen on from the all night long dept.
… how to add a 'night mode' to the OpenBSD framebuffer console to give the text a yellow tint for more comfortable night time viewing, along with quite a few other cosmetic tweaks such as adding support for strikethrough text and double underlining. The article explains how to dynamically adjust the colour pallette, add a new sysctl value, and add a new escape sequence to the console emulation code in the kernel.

