Would be a question best asked in a HSV forum..as I dont think anyone here has one.
Rumour has it the GTS-R's were a marketing plot by Holden to get rid of a bunch of Taxi shells that were no longer required...the colour was nicknamed XU-3 Yella...
The only colour I could find on the Spies Hecker site is...Taxi Yellow...D131... maybe someone else can confirm or rebuke this.
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