修复折叠群组夜间模式显示问题

Bark/Assets.xcassets/Colors/black.colorset/Contents.json

@@ -0,0 +1,38 @@
+{
+  "colors" : [
+    {
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.000",
+          "green" : "0.000",
+          "red" : "0.000"
+        }
+      },
+      "idiom" : "universal"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "1.000",
+          "green" : "1.000",
+          "red" : "1.000"
+        }
+      },
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Common/BKColor.swift

@@ -34,6 +34,8 @@ class BKColor: NSObject {
     }
 
     public static let white = UIColor(named: "white")!
+    
+    public static let black = UIColor(named: "black")!
 
     enum background {
         public static let primary = UIColor(named: "background")!

Controller/MessageListViewController.swift

@@ -42,7 +42,7 @@ class MessageListViewController: BaseViewController<MessageListViewModel> {
         let btn = BKButton()
         btn.setImage(UIImage(named: "group_expand")?.withRenderingMode(.alwaysTemplate), for: .normal)
         btn.setImage(UIImage(named: "group_collapse")?.withRenderingMode(.alwaysTemplate), for: .selected)
-        btn.imageView?.tintColor = UIColor.black
+        btn.imageView?.tintColor = BKColor.black
         btn.frame = CGRect(x: 0, y: 0, width: 40, height: 40)
         return UIBarButtonItem(customView: btn)
     }()

View/MessageList/MessageItemView.swift

@@ -19,7 +19,7 @@ class MessageItemView: UIView {
     let blackMaskView: UIView = {
         let view = UIView()
         view.layer.cornerRadius = 10
-        view.backgroundColor = UIColor.black
+        view.backgroundColor = BKColor.black
         view.isUserInteractionEnabled = false
         view.alpha = 0
         return view