Description:
on macos 10.14 mojave dark mode, the text on autofilter or range filter in calc is white on white and it is unreadable unless highlighted.

tested on safe mode, same thing.
did not happen with 6.2 as it did not have dark mode compatibility

Steps to Reproduce:
make sure macos dark mode is enabled
1.create a new spreadsheet
2.enter some text on a1
3.enter some text on a2:a5
4.click a1
5.menu data -> autofilter
6. click the drop down arrow on a1

Actual Results:
text is white on a white background, not readable unless highlighted

Expected Results:
text is white on dark background like when clicking arrow on save button/new document on toolbar


Reproducible: Always


User Profile Reset: Yes



Additional Info:
Version: 6.3.0.4
Build ID: 057fc023c990d676a43019934386b85b21a9ee99
CPU threads: 4; OS: Mac OS X 10.14.6; UI render: default; VCL: osx; 
Locale: en-AU (en_AU.UTF-8); UI-Language: en-US
Calc: threaded