I like the KDE gnomenu theme, but what I didn't like was that it was only in black, and not very transparent. So I made this set of different colored KDE themes and made them more transparent.
I didn't do much from what Whise did, I just changed the color an opacity. Enjoy!

First thing to do to install these themes is to extract the file "KDE Gemstones" inside the tar file. Then leave the file how it is, and make note of where yo put it.

To install, first make sure you have Gnomenu installed.

Right click on the gnomenu if you have it running on your panel. Go to properties.

You'll have one panel that says themes. Click install. Then make your way to the "KDE Gemstones" file and choose whichever theme you want by clicking on the tar file then pressing Open in the bottom right.

What they look like from top to bottom of the screenshot is Amber, Amethyst, Aquamarine, Emerald, Onyx, Ruby, Sapphire, and Topaz. Sorry about the bad screenies. I guess I should have had a white background to show them off better, but I'm using the Aquadreams default wallpaper so it makes it hard to see their awesomeness.

I personally use the Aquamarine one.

Hint: They look great with Alpha blur.