Question / Help Game Capture Window Transparency

Hello, I'm trying to adjust both overall transparency so that I can see a little bit of the background along with gameplay and in another project, I want to have the edges of the game capture window have edge feathering so that it too has a little bit of transparency blending into the background but with the bulk of Game Capture Window at 100% (except the edges). I've gone into Game Capture Properties and clicked 'Allow Transparency", but I'm not seeing anything that I can play with to adjust to what I've described above.

Any suggestions?

Thanks in advance.
 
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