reset colors after warning
reset colors after warning

If a warning is shown, and you happen to have no color setting in your (bash) prompt, the \033[37m setting, stays active. With the message hardly readable (light grey on my default light yellow background), that means the prompt is barely visible and you need to do `tput reset`.
Would probably be better if the background color was set as well in case you have dark on light theme by default in your terminal.

Signed-off-by: Anthon van der Neut <533c61676c2d79dd312748f5cee9dec0730f2839@ruamel.eu>

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