Problem finding the correct color wires on my 95 mustang convertible to install new pioneer radio, CAN ANYONE HELP?

I pulled up on the internet wire diagram for the car, but I can't find any of the colors that every diagram appears to be talking about.

I also pulled the rear left side speaker panel to make sure what colors they were and sure enough it's the colors on the diagram.
What am I doing wrong?

I powered the radio, everything works fine, but cannot find the correct wires to connect to the radio.
HELP!!!!!