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justincampbell/invert-colors

Created November 17, 2015 14:37
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invert-colors
#!/bin/bash -e
ua=$(defaults read com.apple.universalaccess whiteOnBlack)
cg=$(defaults read com.apple.CoreGraphics DisplayUseInvertedPolarity)
if [ "$ua" != "$cg" ]; then
echo "Values do not match"
exit 1
fi
if [ "$ua" == "0" ]; then
new=1
else
new=0
fi
set -x
defaults write com.apple.universalaccess whiteOnBlack -int $new
defaults write com.apple.CoreGraphics DisplayUseInvertedPolarity -int $new
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