Looks like haibike are about to release the 2024 bikes. While looking for the range extender i came across this list for 2024 bikes which included the colours.
Not just Haibike, but for all bike companies; it would make things a lot simpler for everyone if the marketing guys could be reined in a bit and told to choose any colour they like, but it must come from an existing car company's range. Then at least we'd all have the chance to buy some matching paint from the local car spares shop!
it can be done. My 2019 Focus Jam2 bike in "petrol blue" was a perfect match for Peugot's "Aegean Blue Metallic".