I said I would put a picture of the colour palette up so here it is.
And I began working the piece over the last week. I am not very far along, but it seems to be taking some shape. I am using Piper's Silks which are very fine, so even working for an hour, I seem to only cover a very small part of the design.

But I love the vibrancy of the colours and on the white linen ground, the contrast is exactly what I am looking for. I'll post my progress soon.