The first Foxeye was 5RT1 in 2002, it had the YAMAHA logo on the tank and came in 3 Colours
Deep Purplish Blue Metalic (which is the one you have)
Silver 1
Reddish Yellow Cocktail 1
The revised version of the Foxeye was the 5RT4 in 2003, it had the tuning fork logo on the tank and also came in 3 Colours
Deep Purplish Blue Metalic (Same as yours but with the tuning fork logo)
Silver 1
Vivid Red Cocktail 1
All had a tank size of 22 litres which was a 2 litre increase over the last of the Square eye models