Problems with the display of the tabs in my customized TabControl

[Paiam Salavati]

I want to change the the color of the tabs and the color of TabControl
itself in a TabControl. Therefore I wrote the following code in my
customized TabControl-class:

this.DrawMode = TabDrawMode.OwnerDrawFixed;

protected override void OnDrawItem(DrawItemEventArgs e)

{

e.Graphics.FillRectangle(new SolidBrush(Color.Gray), this.ClientRectangle);

for(int i = 0; i < this.TabCount; i++)

{
Rectangle currentPage = this.GetTabRect(i);

e.Graphics.FillRectangle(new SolidBrush(Color.Green), currentPage);

e.Graphics.DrawString(this.TabPages[i].Text, e.Font, new
SolidBrush(mTabFontColor), currentPage, StringFormat.GenericDefault);

}
}

It changes the colors correct, but the problem is, that the tabs aren't
shown correct (especially if appearence = Button is selected, than it
sometimes draws a normal rectangle instead of an unselected button ).

Does anybody have an idea how I could change the color of the tabs and also
the color of the tabControl itself in a proper way?

I know about "dotnetmagics", but I am not willed to purchase it, because I
think there has to be a different way of implementing this comparative
simple task.