It is difficult to see why the image is small and without much information.
The transparency is at zero, it should appear as a green solid (if it is a visual style in consistent colors);
If you have a realistic visual style, to change the color you must go to Appearance, and choose which option is best for you:
1) Changes Color to green, or
2) mark Tint - and change the Tint Color, as image bellow.

And make sure that the glass material you created is the material that is applied to families.
If it won work, you can send the file for a better analysis.
If the answer solves your problem, click Accept as Solution this helps other users to quickly find an answer and let a like if you liked it.
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Mauricio Santos Filho Arquiteto | BIM Manager