Maybe this is happening because transparency rendering is broken presently, or, maybe devs use one billion to one plasma displays with 10.0 gamma. But for the rest of us, the 30-50% transparency of text is a total mess. I urge that all text displays, whether a script, whether that unreadable name above the avatars, or, even simple elements like the updates-pending dialog not use transparency, or, it you insist on it, use values like 5-10% transparency. Ideally the effect ought to be a blur to reduce the distracting high spatial frequencies of the background.
See how several sections of the update dialog are unreadable because too much high spatial frequency background gets through to the foreground.