Text colour clash.

[BanksySan]

Describe the bug
The Dark (Theia) theme renders the intelli-sense info unreadable.

To Reproduce
Steps to reproduce the behavior:

1. Set theme to Dark (Theia).
2. Try to read the intellisense/quick-info.

Expected behavior
The contrast between text and background is high enough to be readable.

Screenshots

Desktop (please complete the following information):

• Edition Windows 10 Home
• Version 21H1
• OS build 19043.1288
• Experience Windows Feature Experience Pack 120.2212.3920.0

Additional context

IDE:

• Version 2.0.0-beta.12
• Date 2021-10-07T07:55:54.325Z
• CLI Version 0.19.1 alpha [718bbbf2]

[BanksySan]

Same true for the High Contrast (Theia) scheme.

[per1234]

This was resolved in Arduino IDE 2.0.0-rc1, but the developers forgot to close the issue at that time. I didn't bisect it to the exact commit, but I'm sure it was #610