Windmill Star - I keep getting turned around

I I'm moving along nicely with the Carol Doak's Starlight, Starbright quilt. Next up was Windmill Star which, despite its complicated appearance was  fairly straight forward.

I think I've accidentally ended up using the same fabrics as Carol in some areas - a complete accident for once! 

And see the colour difference in the bottom left corner? The fabrics aren't actually any different, it's a trick of the light caused by....sun! Yes, we actually had some sun shine over the Easter weekend. Dare I hope spring is on its way?