gday all im new to blender ive just completed carriage bodys for trainz game on the Southern Aurora passenger train and im currently need some help to make some glass windows just like ive sent in the picture of the Lounge car and get some advise on how to make the windows very clear and make them like a light greenish color. anyone with some advise and help who are good at this please let me know i appreciate it very much for the help and advise to do it as been a newbie to it it will be a big help 
So is this going to be for a game or just still render?
If it is going to be for a game, it will depend on what game engine you are going to be using.
trainz 2022 - Bing images its for this game GrimZA
I think that your most authoritative source of answers in this case might be a forum that is specifically dedicated to that engine. If you can obtain public models for that engine which seem to be sort-of what you need, and used in sort-of your intended situation within the game, try to take them apart to see what they did.