[Problem] No way to reset cell background color

[NXTler]

Is there an existing issue for this?

• [X] I have searched the existing issues

Problem description

Greetings, when changing the background color of a cell, there is no way to revert to transparent again without deleting the cell: FreeCAD also sets the background to white when using STRG + Z, assuming that the spreadsheet background is the same, which is not the case when the user uses a dark theme.

Full version info

OS: Manjaro Linux (KDE/plasma)
Word size of FreeCAD: 64-bit
Version: 0.22.0dev.37213 (Git) AppImage
Build type: Release
Branch: main
Hash: 20e7deb86a8c6c2cd2378f09f8313760933f3a5c
Python 3.11.9, Qt 5.15.13, Coin 4.0.2, Vtk 9.2.6, OCC 7.7.2
Locale: German/Germany (de_DE)
Installed mods: 
  * PieMenu 1.2.7
  * sheetmetal 0.4.2
  * A2plus 0.4.63
  * QuickMeasure 2022.10.28
  * Curves 0.6.23
  * CfdOF 1.25.2
  * IconThemes
  * fasteners 0.5.12

Subproject(s) affected?

Spreadsheet

Anything else?

No response

Code of Conduct

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