Corrected typos in msg343336 for clarity:

At first glance, has_extended_colors() seems like a better name because it is similar to has_colors(), but the two functions have very different semantics that could confuse developers. has_extended_color_support() indicates available functionality in the underlying ncurses library that is set when the interpreter is compiled and linked, while has_colors() indicates available functionality of the current terminal at run-time. The name has_extended_colors() would imply that it indicates run-time terminal functionality and not static library functionality.