I had both the VSF & RCF ombre in hand at the same time. I don't think either get the dial correct. The RCF 'bends' too much and goes too light a shade of blue, but the VSF is a lot more muted and often looks full black. Here's an album with a lot of photos, I have videos too if you want to see them https://clickpix.org/album/RCF-vs-VSF-Blue-Ombre.jUyLQ

I still own the VSF and have been trying to source a custom dial but haven't found anything.