MINIMIZE, MAXIMIZE, CLOSE NOT SYNC WITH THEME

Fixed issue with MINIMIZE, MAXIMIZE, CLOSE when changing theme during
run time
Merge pull request #124 from dennismagno/master

MINIMIZE, MAXIMIZE, CLOSE NOT SYNC WITH THEME
BUG : Combobox

Fixed issue when switching the theme to dark the theme seems to be not
applied to the combobox
Merge pull request #125 from dennismagno/master

BUG : Combobox