the badge i have is an original gti badge just sprayed red.
other red gti badges on ebay are fakes, they will discolour after time and weather.
the original 25th anniversary badge that was mounted on the front grille cost £39.99 from my local dealer, the rear is £19.99.
you can stick this onto the stock gti badge holder but will need soem strong weather proof glue.
tried all these options and failed after time so purchased the red gti badge off ebay, quality painted and fits straight on as its a whole peice.