[pygtk] Improving pygtk appearance, or moving to wxPython?

[JUAN ERNESTO FLORES BELTRAN]

Hi you all,

I am not interested to create any controversy, but to get the best advice. I 
am developping my application in pygtk, it has been not an easy task :) but 
i have come a long way. However i have realized it seems preety simple, not 
colored, all the widgets with the same color inside a green boring window 
!!!

i have not found any tutorial wich teach how to implement effects to the 
widgets, improve their appearance add color to the widgets, cursor movement 
effects or 3D effects...

I would really like to add some "vitality" to my application, but i 
wonder...is it possible with pygtk??. I have followed the instructions in 
this tutorial:

http://www.moeraki.com/pygtktutorial/pygtk2tutorial/

Wich i consider is an excellent introduction to pygtk, however could any of 
you suggest any tutorial to improve my application appearance. On the other 
hand i wonder whether i must move to wxPython to fill my needs?

Thanks for your answers.
Juan