Add public modifier to ChartColors and add showShadow property

Sources/SwiftUICharts/Base/CardView/CardView.swift

@@ -4,17 +4,22 @@ public struct CardView<Content: View>: View, ChartBase {
     public var chartData = ChartData()
     let content: () -> Content
 
+    private var showShadow: Bool
+
     @EnvironmentObject var style: ChartStyle
 
-    public init(@ViewBuilder content: @escaping () -> Content) {
+    public init(showShadow: Bool = true, @ViewBuilder content: @escaping () -> Content) {
+        self.showShadow = showShadow
         self.content = content
     }
 
     public var body: some View {
         ZStack{
-            RoundedRectangle(cornerRadius: 20)
-                .fill(Color.white)
-                .shadow(color: Color.gray, radius: 8)
+            if showShadow {
+                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
-    static let orangeBright = Color(hexString: "#FF782C")
-    static let orangeDark = Color(hexString: "#EC2301")
+    public static let orangeBright = Color(hexString: "#FF782C")
+    public static let orangeDark = Color(hexString: "#EC2301")
 
-    static let legendColor: Color = Color(hexString: "#E8E7EA")
-    static let indicatorKnob: Color = Color(hexString: "#FF57A6")
+    public static let legendColor: Color = Color(hexString: "#E8E7EA")
+    public static let indicatorKnob: Color = Color(hexString: "#FF57A6")
 }