Glowing button on Hover

I'm trying to create a button that glows when you hover over it.

I also need the button to have no outline.

The method I have used seems to be a tad messy and it isn't the desired result I want. I was wondering if anyone could offer any advice on how to make it better. I have used the MouseMove event on two buttons. There is a small button on top of a larger button. The small button activates the glow property when hovered over and the larger button deactivates it for the region outside. At the moment I have a horrible outline which I dont want.

Please see the attached spreadsheet to see exactly how it works.

To be clear I want to go from this

unhover.jpg

When I'm not hovering over the shape/button

to this

hover.jpg

When I am hovering over the button. And I want to assign a macro to the button that will do something else.

Any advice would be greatly appreciated.

Thanks