Group format

I am doing screencasts, and Storyline outputs these large call outs with instructions what to do next based on what I was doing during the screencast. Great feature but the problem is these large call outs are bulky and cover a lot of the screen.cast., so i want to make the output 50% transparent. I have hundreds and hundreds of screens., so this is a substantial issue.

Questions:

1. Is it possible to do some kind of global format so all the text output is 50% transparent? I figured out how to change the color by working with the color themes, but I couldn't see how you could have a semitransparent color in the color theme.

2. Or better yet, is there a way to have the output come out transparent when I produce the screencast?

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