I haven't used it but there is the SetGUITransparency() function in V2.62. In the upcomming V2.7 version the function is replaced with the property GUI.Transparency.
I don't know if or how this works with a text GUI. Rui's LSL7 template overlays a GUI with an invisible background over a GUI that has a translucent/transparent GUI to achieve something similar. I think there was something done in V2.7 to make using two separate GUI's unnecessary but I am not sure.
I don't know if or how this works with a text GUI. Rui's LSL7 template overlays a GUI with an invisible background over a GUI that has a translucent/transparent GUI to achieve something similar. I think there was something done in V2.7 to make using two separate GUI's unnecessary but I am not sure.