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Windows 2000 (and Server 2003) changed from the 95/98 dark cyan to a shade of azure/sky blue. That's another choice that might be quite popular.

It's actually called "teal" in X11: https://en.wikipedia.org/wiki/X11_color_names#Color_name_cha... — It's also available on Windows 10 by default where it's called "Seafoam Teal"