Hi,
I’m changing the buttons in TWG right now to use sprites (= one image where all images are picked from).
While doing this I have selected new icons for the fullscreen mode as well:
http://icons.mysitemyway.com/matte-grey-square-icons-arrows/
e.g. below is a new set which will be available in 1.8.
When I’m done with the sprits I will write a nice post how sprites can be easily implemented. I have used 4 different ways how this can be done and as sad as it sounds – most of the turorials are using the most complicated way possible!
– Michael