A torch or redstone Torch can be place on the normal glass. but I will place the torch or redstone torch on top the stain glass (placed on all color.) It can't place on top the blocks.
Environment
OS : Microsoft Windows XP Professional Version 5.1 Service Pack 3
CPU : Intel(R) Pentium(R) 4 CPU 2.80GHz
RAM : 1 GB DDR RAM
Java Version : Java Development Kit 1.7.0_51
OpenGL Version : Intel 1.3.0 Build 4.14.10.4342
Duplicate of MC-34648