D18854: Allow changing the foreground/text color of buttons

[Christoph Feck]

cfeck requested changes to this revision.
cfeck added a comment.
This revision now requires changes to proceed.


  There is a usability issue with the `MR` button when the memory is empty. Setting the text color overrides the lighter color that is used for disabled buttons.
  
  I suggest to use something like `setAlphaF(0.7)` on the color for `disabled()` buttons for modifying the context's palette.

REPOSITORY
  R353 KCalc

REVISION DETAIL
  https://phabricator.kde.org/D18854

To: thiagoneves, cfeck
Cc: kde-utils-devel
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