One nerdy detail about old operating systems and graphics cards: due to the way the VGA color palette works, the teal background used in Windows 98 and earlier versions of Windows was actually lighter than #008080 if the computer was configured to use 16 colors (not 256 colors):
Another nerdy detail: the default background color on Windows XP was different depending on whether the theme was Luna or Classic. On Classic it is the same one as Windows 2000, but for Luna it is more blueish. I understand the denial, but it will be the 25st anniversary of the XP release in a few months, so it probably qualifies as classic by now.
https://twitter.com/bakertechsrvcs/status/162629846037367193...
https://xcancel.com/bakertechsrvcs/status/162629846037367193...
Another nerdy detail: the default background color on Windows XP was different depending on whether the theme was Luna or Classic. On Classic it is the same one as Windows 2000, but for Luna it is more blueish. I understand the denial, but it will be the 25st anniversary of the XP release in a few months, so it probably qualifies as classic by now.