Hi there,
In this package there is three modules, which (I think) somebody can find for useful.

In first look, they looks like GTK applications. But not so... This is just ECMA-262. I used WebKit lib in GTK Seed (from one example).

To run these modules, you need to install seed:
$ sudo apt-get install seed
(http://live.gnome.org/Seed)
Then run some of three files:
keyboard.sh
rgbkingdom.sh
symbols.sh

There is not translated manual, but I think, interface is intuitive.

---
Keyboard
In file additionalLanguages.js you will find how to make your own keyboard layout.
---
Symbols
Here you can visualize (almost) all symbols from UTF-16; view them and their codes.
---
Colors (RGBKingdom tool)
With this widget you can play with colors and color combinations. Posibility to use different color wheels and make your own (by editing the script).
---

!IMPORTANT!
These scripts are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

I hope, there is not many bugs in this beta version.
Have a nice day!