The options menu has a translucent background and I would like to make it solid and non-transparent. Is there a way?
If you don't want to style a whole theme and just change the options menu background then set the panelFullBackground property to a DRAWABLE RESOURCE of your liking. Setting it to a color directly doesn't work so either make one coloured - 9patch, if you want to save in size -image and set it to that or make a couple and make a selector drawable with an image for each state.
I put my definition in a style that i use for all the activities in my project using:
@drawable/optionsmenu_back
optionsmenu_back being a 9patch image with a solid colour...