Remove borders around a push button in GUI

As from the image, I would like to remove the white/grey border that exists around a uibutton in a matlab GUI.

I have tried to use findjobj to get the underlying java code (as has been suggested elsewhere), however this command does not seem to work. I'm using R2016a and windows.

If there is any other way of removing this border in the underlying code, or any other way at all, I'd appreciate any advice!

Mank thanks.

Answer 1

[Walter Roberson]

If I recall correctly, http://undocumentedmatlab.com has a note to the effect that if you use a radio button and change its CData then you will not have a 3D effect. (Possibly that would extend to changing the CData on a pushbutton, I am not sure at the moment.)