Series 3 / XDLT Symbol & Color Standard?

Before the pandemic, I started working on fully color coding the lens tubes on our conventionals and Series 1 fixtures. I tried to find an industry (USITT?) standard to follow, but could only find the symbols -- it seemed that everyone had their idea of what the 'correct" color code should be. When the Series 3 / XDLT fixtures were announced, I was intrigued by the colored symbols on the Lens Tubes (see photo, apologies for the low resolution screenshots), and it led me to wonder how ETC selected these colors. I doubt we'll be able to afford many Series 3 fixtures soon, but I am now considering starting over and using these colors in our system.

Can anyone give me any more info about the color selection? Is it here to stay? Thanks!