Color wheel palette based?

i have a gimp for painters they have a RGB color wheel is really usefull.

but i am thinking if exist any way to change de color of the wheel based on a palette ?

example
http://i48.tinypic.com/30u8w82.jpg

i am work whit gimp more than a year ago
these are my work created on gimp
http://www.flickr.com/photos/37012099@N08/4312151389/in/photostream/
http://www.flickr.com/photos/37012099@N08/4734530942/
http://www.flickr.com/photos/37012099@N08/4557182935/
http://www.flickr.com/photos/37012099@N08/4557182417/
http://www.flickr.com/photos/37012099@N08/4557181473/
http://www.flickr.com/photos/37012099@N08/4557180807/in/photostream/

thanks