It's yellow pink black white green , and it's a membrane keyboard which ususlly having 4 wires , doesn't know the meaning of 5 wires. (Because this wire went bad, i want to buy a new wire to change it )
The keyboard's manufacturer may or may not have followed the accepted USB connection standards and, instead, created their own proprietary connections. And that may also include using wire colors of their choice. (Which may also vary depending on the cheapest wire available at time of manufacturing.)
The important part is to be able to map the connection paths (pinouts) end to end. From keyboard to USB port.
I.e., which pins on each end must be connected. Look at the various wiring diagrams in the links provided to get a sense of it all. Sketch out the pattern as you figure it out.
A multi-meter will help verify the end to end connections.