and we haven't got many palm trees in denmark
There are plenty of them at IKEA
Sweden is close.....
Well actually this is not Sweden...I googled and found this pic as a first hit.
The trunk looks like a sand colour. I would brush the trunk in a dark brown and highlight it with softer browns. The final highlights would be Valejo 976 BUFF and Bleached Bone.
Cheers
Björn