Thanks
Finished the decals tonight, just need to decide if I add any weapons and light weathering - then another one complete

The upper colour looking at reference photos is very close to the lower shade, mines is a fraction dark I think but I think it looks ok
As for your dilemma, I don't pre-shade as I put too much paint on the model and it disappears so I favour post washes. But I'm sure which ever you decide it will turn out well