Thanks Ying!
I tried do this as a new page layout and it worked great.
However, when I try the same technique with a block content template from GB Pro Elements, the ‘screen’ effect does not work / has no effect. (I tried with both a dynamic headline and static headline)
Is this how a block content template should work or is this perhaps a bug or is there some additional setup required for this to work within an elements block content template?