I made the same mistake with colours as looks different on screen. It’s the dove grey that matches. It does brush OK as well. I was told a little additive to help the brush marks come out is best (can’t remember name now).Very nice work. Did you use Paragon Paints ash grey? Do you know if it brushes nicely too?
I used white spirit to thin when spraying. Apparently heating it also helps it wet out more.