I was going to post that Monaco orange it's the paint that you were looking for, but you already found it. Instead, i'll leave this:
1.- Buy the FC Transmission.
2.- Set the final to 3.154.
3.- Set Max Speed to 310 Km/h (192 mph) (If it's already at 310 Km/h, change it to another one and again to 310 Km/h)
4.- Set the individual ratios:
- Gear 1 = 4.780
- Gear 2 = 3.056
- Gear 3 = 2.153
- Gear 4 = 1.678
- Gear 5 = 1.390
- Gear 6 = 1.203
5.- Enjoy the ride!
To make it a 500PP car for online racing, i made a version that only has: Weight Reduction Stage 1 (+ ballast set to 41 Kg), second exhaust upgrade, and the rear aero set to 5.