Presently, the tool tip text in recent colors is shown in its
 hexadecimal representation when the split color button is clicked.
 Change the hexadecimal representation of the colors in 'recent
 colors' to its actual color name.

Change-Id: I59636eb124b75a9397337c9560bfff72804424ae
Reviewed-on: https://gerrit.libreoffice.org/70337
Tested-by: Jenkins
Reviewed-by: Jim Raykowski <raykowj@gmail.com>