Description:
The latest update of LibreOffice calc introduced the ability to filter by Background or text colour which works if you manually change the cell colours.

If the Background or text colour are changed by conditional formatting this does not show in the filter selection so you cannot filter by it.



Steps to Reproduce:
1.Create a list of numbers with some duplicates
2.used the conditional format - condition to format the duplicate values as 'errors' which have white text on a red background. 
3.Apply an auto filter to the list.
4:Neither the red background or white text appear in the Text Colour or Background colour in the filter selection.

Actual Results:
Background & text colour not shown in filter selection

Expected Results:
Background & Text colour should appear in filter selector allowing cells formatted by conditional formatting to be filtered.


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
[Information automatically included from LibreOffice]
Locale: en-GB
Module: SpreadsheetDocument
[Information guessed from browser]
OS: Linux (All)
OS is 64bit: yes

https://gerrit.libreoffice.org/gitweb?p=core.git;a=log;h=9a9c6381e3f7a62afc1329bd359cc48accb6435b

(the rest will not copy)