how to remove a theme

I am using Ubuntu 6.06. I installed a few GTX2.x themes from gnome-look.org. I want to uninstall a few of them. how do i do it?
I tried deleting the window boders, icons etc but am unable to remove the main theme.
help.

@Shaunak, The Ubuntu GNOME themes are stored in the directory /usr/share/themes.
Just type :
$ ls /usr/share/themes

It will output the themes you have installed or available (by default).

Here is the procedure for removing the Themes manually:

$ sudo rm -R /usr/share/themes/Mist

This will delete the 'Mist' theme & it's sub-directories.
Replace 'Mist' with whatever theme you want to delete.

Managed to remove others but
Couldnt locate the ofensive theme.
Its called "butvista"
The list of my files are:

Code:

AgingGorilla  Grand-Canyon                   LegacyHuman            Resilience
Atlanta       Gray                           LighthouseBlue         Sandwish
Bright        HighContrast                   LowContrast            Silicon
Clearlooks    HighContrastInverse            LowContrastLargePrint  Simple
Crux          HighContrastLargePrint         Metabox                Smokey
DebianRed     HighContrastLargePrintInverse  Mist                   Smokey-Blue
Default       Human                          Ocean-Dream            ThinIce
Emacs         Industrial                     Outdoors               Traditional
Esco          IndustrialTango                Raleigh
Glider        LargePrint                     Redmond

Which one to remove?

As per your output there is not theme by name 'butvista'!!
Do one thing open the GNOME search tool.
$ gnome-search-tool

Specify the parameters as follows:

Name contains : butvista
Look in folder : File System

Click on 'Find' button. You also need to 'disable Quick search'.

may be its a window border?in "gnome-theme-manager"(run it from a terminal or..) go to theme details and probe in controls,window border TABS.select and remove using the remove button on the right

ITs not a window border. its a GT2.x theme: heres a screen shot:
*img140.imageshack.us/img140/8186/screenshotpw0.png
@jguru: i couldnt launch the search tool using the command you specified. Ran it through places>search. Any way it didnt turn up any results.
ps: Should i try to use the gnome art manager. what is the command for downloading it?

@Shaunak, I think you installed some Vista theme in Ubuntu!! Is that right??
Tell me what's your problem? I want to know how much space you have allocated
for root('/') & swap? Are you running short of space or getting some errors?

In case you want to install Themes in GNOME the easy way, install the package, gnome-art.

$ sudo apt-get install gnome-art

After installation launch the application. If you choose 'Application Icons' all the
Application icons themes(preview) from GNOME website would be downloaded!!
If you click on 'Install' the theme will be downloaded from the Net & installed.

Its not a vista theme

i got the theme from gnome-look.org. [go to the highest rated section in gt2.x]
ive alocated 7gb for the '/' and 700 sumthing for swaping. imm not getting any errors. i just want to remove it.

Ps: ill try installing art manager and post back, as soon as synaptic becomes free

@Shanuak, Give me the exact URL link to the Theme. The highest rated under GTK 2.x
is Murrine GTK2 Cairo Engine, Click link
Is this the one you are talking about?

*www.gnome-look.org/content/show.php?content=32227
ITs there ^^^

OK, I got it. I'm running out of time now!! I'll be back at 8:15 pm tonight.
I'll tell you then how to remove the 'VistaBut' theme.

Solved the problem on my own! Yay!
went to my home folder listed the files and i saw many files which did not show up in natulius. Then i realized that the files i was looking for were hidden. simply disabled hiding and deleted from .theme folder.
easy.
Finaly imm leaning to solve problems in nix!

Simply Press 'Ctrl + H' to view hidden files!! Any file that starts with a '.' (dot) is a
hidden file. You shouldn't delete the '.theme' directory!! Just delete the contents
of '.theme' directory. That's all. Also some of hidden directories are used by the
Linux O.S. So must be very careful before deleting any hidden directory or file!!