Set View Picker Header Color? - swiftui

Question

Is it possible to add background color to the top of a picker view? I'm specifically interested in the area from the top of the view down to just below the navigation bar. I have made all my app tab and navigation views with the same header appearance but haven't had any luck with the pickers.
I would like to set the picker backgrounds to look like this:
Here is a picker view that I would like to add background color.
Here is what happens when adding call to DrawNavBox() just after the Picker (See code below). I need help pushing the green block to the top of the view.
The code below is what generates the Home Currency green header above
var body: some View {
GeometryReader { g in
VStack {
DrawNavBox(g: g) // draw green header
Text("Your home currency is:")
.padding(.top, g.size.height * 0.10)
Text("\(base.baseCur.baseCurrency) \(base.baseCur.baseCountry)")
.font(.body)
.fontWeight(.bold)
.foregroundColor(.white)
.padding(15)
.background(Color("Dark Green"))
.cornerRadius(20)
.padding(.trailing, g.size.width * 0.19)
.padding(.leading, g.size.width * 0.22)
Form {
Section(header: Text("Select Home Currency")) {
Picker("Home Currency", selection: $gotBase) {
DrawNavBox(g: g)
ForEach(0 ..< currCountry.count, id: \.self) { item in
VStack(alignment: .leading) {
Text(currCountry[item])
.font(.subheadline)
.padding(.leading, 25)
HStack {
Text(currSymbol[item])
Text(currName[item])
}
.font(.caption)
.padding(.leading, 25)
}
}
}
}
}
}
.navigationBarTitle(Text("Home Currency"), displayMode: .inline)
.navigationBarItems(trailing:
Button(action: {
// search for new base currency
self.changeBaseCurrency()
}) {
Text ("Save").bold()
}
)}
}
}
This is the code I have been using to set the navigation bar area green
struct DrawNavBox: View {
var g: GeometryProxy
var body: some View {
ZStack (alignment: .top) {
Color(.systemGreen)
.frame(height: (g.safeAreaInsets.top), alignment: .top)
.ignoresSafeArea()
}
}
}