Description:
Regression, happened some time after 5.4.7.2 (the next version I have available is 6.5.0.0.alpha1; bug is also there in current master):

A "Button" control with black background and white text now shows completely black, i.e. the font color is rendered black even though it is set as white.

This affects controls in existing docs (which now are unreadable) as well as new ones.



Steps to Reproduce:
1. View->Toolbars->Form Design checkec
2. Click the "Design Mode" Form Design icon (green drafting square & pencil)
3. Insert->Form Control->Push Button
4. Draw a rectangle somewhere on the spreadsheet with the mouse
5. Rightclick->Control Properties...
     Click the "..." next to "Font"
     Change the Font color to e.g. red
     Click OK
     

Actual Results:
Font color of button label is still black

Expected Results:
Font color should be obeyed.


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
The attached file BlackButtonWhiteText.ods contains a button copied from a previously-working application (which now displays unreadable all-black buttons).