Refactor Chart base

Sources/SwiftUICharts/Base/CardView/CardView.swift

@@ -4,22 +4,17 @@ public struct CardView<Content: View>: View, ChartBase {
     public var chartData = ChartData()
     let content: () -> Content
 
-    private var showShadow: Bool
-
     @EnvironmentObject var style: ChartStyle
 
-    public init(showShadow: Bool = true, @ViewBuilder content: @escaping () -> Content) {
-        self.showShadow = showShadow
+    public init(@ViewBuilder content: @escaping () -> Content) {
         self.content = content
     }
 
     public var body: some View {
         ZStack{
-            if showShadow {
-                RoundedRectangle(cornerRadius: 20)
-                    .fill(Color.white)
-                    .shadow(color: Color.gray, radius: 8)
-            }
+            RoundedRectangle(cornerRadius: 20)
+                .fill(Color.white)
+                .shadow(color: Color.gray, radius: 8)
             VStack {
                 self.content()
             }

Sources/SwiftUICharts/Base/Style/Colors.swift

@@ -2,9 +2,9 @@ import SwiftUI
 
 public enum ChartColors {
     // Orange
-    public static let orangeBright = Color(hexString: "#FF782C")
-    public static let orangeDark = Color(hexString: "#EC2301")
+    static let orangeBright = Color(hexString: "#FF782C")
+    static let orangeDark = Color(hexString: "#EC2301")
 
-    public static let legendColor: Color = Color(hexString: "#E8E7EA")
-    public static let indicatorKnob: Color = Color(hexString: "#FF57A6")
+    static let legendColor: Color = Color(hexString: "#E8E7EA")
+    static let indicatorKnob: Color = Color(hexString: "#FF57A6")
 }