[c#] tabcontrol, change the color to whole tabcontrol

I have sent an app to my colleagues and they have win7, stlye in win is set to aero stlyle. They see all tabpage-s white even though I see in gray, color is by default "Control".
If i try this code:

tabControl3.TabPages[0].BackColor = Color.Green;

i get the tabpage green, but the "tab" above (where the text is for the tabpage) is stil grey.

Hot to make the whole tabcontrol in diferent color. In Properties window you can only change color to a tabpage but not to a whole tabcontrol.

Tags: C#, Color, TabControl