Need help with weird audio wire colors
In the old days Windows PCs had a tool that allowed you to play a sound to one ear or the other, I suspect they still do.  I suggest you try connecting pairs of wires and see what works - you don’t need to make any assumptions about the colours.  If your headset doesn’t have a microphone then each ear will have 2 wires and you’ll probably end up connecting one from each ear to ground, which will be the main body of the connector.  If you have a microphone then the four wires will be left, right, ground and mic.  Use the same procedure to identify the connections that you need for left and right, then the remaining wire is the mic connection and that goes to the unused connection on the plug.  Don’t worry about mis-wiring when you’re testing, you won’t damage anything.