Please Note: This mod was originally done for the HTC M8, and has only been tested on it. It should be fine on most devices. I have the LGG3 Stock ROM Lollipop 5.0.1 and it worked for me.

Please go to this link and follow instructions. Thank @Basil3

http://forum.xda-developers.com/htc-...34730-t2923448

This Hangouts Themer is hidden deep in HTC Threads which is why i am posting here.

Below see the Light Blue and Grey theme. To apply new theme just flash in rec again and chose color in aroma.