Unreadable Text in Parameter Info Popup

[SebastianAigner]

When no matching parameters are found, the text in the parameter info popup (Cmd-P / Ctrl-P) is pretty much unreadable with the Dark Purple theme enabled.

Compare this to Darcula, where the greyed-out text can still be read:

[OlyaB]

For me this tooltip looks like that in v2019.1 and v2019.2 EAP:

Perhaps there's been a bug with unnecessary selection on "no parameters" string and it's been removed since then. What version do you use?

[SebastianAigner]

On empty parentheses, it looks the same to me:

However, when I add code inside the parameters (which gets marked as an error), I still get the same visuals:

This is in IntelliJ 2019.2 EAP.