I installed beamerspot.module http://www.spitzmueller.org/tools/lyx/beamerspot.module But not sure about usage.
I found Edit/Text Style/Spotlight. This produces a yellow oval. But how do I customize? According to http://wiki.lyx.org/Layouts/Modules: "The form and color of the spot can be modified globally or per token." How? -- -- Those who don't understand recursion are doomed to repeat it
