Transparent image - background color

I'm wondering if it is possible to set a background color for transparent images? (only the image will have background color)

How do I add color to a transparent picture?

Select the picture for which you want to change the transparency of a color. On the Picture Format tab, select Color, and then select Set Transparent Color. Click the color in the picture or image that you want to make transparent. Note: You can't make more than one color in a picture transparent.

What is the color code for transparent background?

#0000ffff - that is the code that you need for transparent.

If I understand you right, you can do this:

<img src="image.png" style="background-color:red;" />

In fact, you can even apply a whole background-image to the image, resulting in two "layers" without the need for multi-background support in the browser ;)