The play,option,and skin button changed its letters' color to yellow when i go back to the main menu even if i not pressing it.

I opened my Minecraft PE. And then,i clicked on the play button and i forgot to change my skin because there is a new skin pack released for build 5. So,i went back to the main menu and then,i noticed that the play button's letters are yellow while i was on the main menu. It is also desame with the option and skin button. So,please fix this and i will really appreciate your work.