invert icon color temporarily when tapping on menubar
invert icon color temporarily when tapping on menubar

Markismus/koreader,Hzj-jie/koreader-base,noname007/koreader,ashang/koreader,Hzj-jie/koreader,frankyifei/koreader-base,apletnev/koreader,ashhher3/koreader,pazos/koreader,NiLuJe/koreader,Hzj-jie/koreader-base,apletnev/koreader-base,koreader/koreader-base,Hzj-jie/koreader-base,Frenzie/koreader-base,koreader/koreader-base,chrox/koreader,apletnev/koreader-base,houqp/koreader-base,NiLuJe/koreader-base,NiLuJe/koreader-base,Frenzie/koreader,koreader/koreader-base,mwoz123/koreader,frankyifei/koreader-base,frankyifei/koreader-base,apletnev/koreader-base,koreader/koreader-base,apletnev/koreader-base,houqp/koreader,Hzj-jie/koreader-base,Frenzie/koreader-base,Frenzie/koreader,chihyang/koreader,poire-z/koreader,koreader/koreader,NiLuJe/koreader-base,lgeek/koreader,NiLuJe/koreader-base,Frenzie/koreader-base,Frenzie/koreader-base,houqp/koreader-base,NiLuJe/koreader,robert00s/koreader,poire-z/koreader,houqp/koreader-base,houqp/koreader-base,frankyifei/koreader,mihailim/koreader,koreader/koreader,frankyifei/koreader-base,NickSavage/koreader