Text in maintenance tab is unreadable in most themes

[Matthew]

Steps to reproduce
1. Start Simutrans-Extended from 21 August 2021 (f00df43) with pak128.Britain-Ex
2. Load a game with a convoy.
3. In the Display window, check that the theme is not any type of "High Contrast"
3. Open the Convoy info window, then the Details window, and then the Maintenance tab.

Expected behaviour
The details of the convoy can be seen.

Actual behaviour
The details of the convoy cannot be read:


Notes
If you change to a High Contrast theme, then you can see the text. So maybe the other themes have black text on a black blackground?

[jamespetts]

A similar error has been fixed in a pull request incorporated earlier to-day; can you check whether this problem can be reproduced with to-morrow's nightly build? Thank you.

[Matthew]

A similar error has been fixed in a pull request incorporated earlier to-day; can you check whether this problem can be reproduced with to-morrow's nightly build? Thank you.

This seems to have been fixed now. Thank you to whoever made the patch and to James for implementing it!