I just uploaded a new unit to the vcl style utils project called Vcl.Styles.Fixes, this unit contains the TButtonStyleHook style hook which fix these QC #103708, #107764 reports for Delphi XE2.
Note : The QC #103708 still exist in Delphi XE2 Update 4, even if appears as resolved (XE3 maybe?)
The Road to Delphi 
August 9, 2012 at 6:24 am
Just thanks from an ex-delphi user that you fix those things so easy. Please send them to embarcadero. :)
August 10, 2012 at 1:13 pm
Thx, always good to see fixes coming along.