Fix code folding arrow color
Fix code folding arrow color

mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme,mikedisbrow/theflats-theme