Feature Request - Better Glass Effect Colouring

I have just downloaded the latest version of colorful tabs for Firefox 4 I think it could be made to look better with aero glass effects. I have included an image below, the first two tabs are probably the best examples of how I think it should look as they have icons on the desktop behind them.

http://img683.imageshack.us/img683/5989/exampleds.png

That was done by just modifying the gamma values for the background colour of the tabs I would hope this can be achieved in firefox using alpha blending. Notice it is only done to the background of the tab not the text, icon or border like the fading level options do in the current version.

I don't think I was clear enough I know there is a transparency effect but it is applied to the whole of the tab including the title text, the icon and the tabs border see below

At 5 fading level text is getting less clear:
http://img204.imageshack.us/img204/2868/exampleno.png
At 8 it's terrible:
http://img213.imageshack.us/img213/6750/example2z.png

If you look at the default glass effects they are applied solely to the backgrounds the foreground stuff like the text is left as is. Leaving the text, tab border and icon as is looks much better.