Plating for power brake booster tube and fitting

[Maxsg1973]

When you guys restore your power brake booster tubes and fittings what finish did you use? I blasted and zinc plated mine with my Caswell kit. I decided not to do the chromate conversion coating because I thought it looked correct. Only draw back is it has no protection and the typical zinc white rust is setting in. The haze you see on the bracket is the white rust and it polishes away very easy. What is considered the correct finish? Please take a look at the pic below and give me your opinion. Any and all feed back is greatly appreciated.