Ability to tweak the Style

I'm not asking for a full theme here.  The theme included in the panel is already very good.

But some basic styling should be in place, such as the ability to change the colors of the top bar, the buttons and the font used.

This will go a long way in creating a more customized look.

In my case, none of the colors represent my company.  And just a few basic touches could improve the situation a lot.  I need this to have aesthetics similar to colors and font used for my company.  This way customer will feel more "at home".