Not true. Ral2009 is new Kubota orange, and ral2004 is og orange. Further, for "rops grey", Rust-Oleum gloss charcoal gray is dead on.
I've made countless samples and cannot tell the difference.
Please also note orange (not just Kubota orange) is one of the worst colors for fading. If your machine has been out in the weather, you will have difficulty. Mine are garage kept, and the color is perfect.