Windows 10: GREEN DOT AND ORANGE DOT

WHAT IS THE DIFFERENCE BETWEEN GREEN DOT AND YELLOW ON THE BOTTOM LEFT CONER OF A FOLDER ON DESK TOP

:)

 

Black, orange and green audio cables

I think it's Green > Green, Black > Blue and Red > Orange

 

Ethernet Light Orange/ "Local Area Network" Not in Network List

Last night I noticed my ethernet light on the back of my computer was orange. I did some research to find the reason. Some websites said it was an increased connection speed. Others said a problem with the connection.
The local area network is no longer in the list of network connections and the other computer in my house has a green light on the ethernet port.
I've used all the cmd.exe ipconfig steps suggested by websites. Flush dns, reset dns, etc. I've also used the network troubleshooter in windows10 which told me a problem was not found.
Nothing seems to change the light back to green. Can someone help me find the problem so I can fix it?

 

Black, orange and green audio cables

I have a 5.1 system, and the cables are black, orange and green. But on the new motherboard, and I've noticed pretty much all motherboards, they only have blue, green, and red inputs. Not sure what I should be doing here.