Image StandardHighlight(Color inside, Color border)
{
	Size sz(5, 5);
	ImageBuffer ib(sz);
	RGBA *q = ~ib;
	for (int i = 0; i < 5; i++)
		for (int j = 0; j < 5; j++)
			*(q++) = (i == 4 || j == 4 || !i || !j) ? border : inside;
	ib.SetHotSpot(Point(1, 1));
	ib.Set2ndSpot(Point(3, 3));
	return ib;
}

Image AlphaHighlight(const Image &img, int alpha)
{
	ImageDraw draw(img.GetSize());
	draw.Alpha().DrawRect(img.GetSize(), Color(alpha, alpha, alpha));
	draw.DrawImage(0, 0, img);
	// Is there a better way to set hotspots than this?
	ImageBuffer ib((Image)draw);
	ib.SetHotSpot(Point(1, 1));
	ib.Set2ndSpot(Point(3, 3));
	return ib;
}

CH_STYLE(DockWindow, Style, StyleDefault)
{
	Image img = StandardHighlight(Blend(SColorHighlight, SColorPaper, 90), SColorHighlight);
	stdhighlight = img;
	tabhighlight = AlphaHighlight(img, 160);
}