Edit qubes-dark.script to customize disk password screen

I want someone good to look at /usr/share/plymouth/themes/qubes-dark/qubes-dark.script and tell me what to edit so as to have a completely black disk password screen (that someone would tell the monitor is off,) but still functional of course.

After the good one edits it, I want some other good people to also verify that it will not break, because I think this is fatal.

Thank you!