improve old downloading menu UI

Improved the old downloading menu’s ui, this is subject to change in addition for the new one but still haven’t made that one work yet.

Controllers/YouTubeDownloadController.m

@@ -194,11 +194,12 @@ - (void)shortsDownloader {
 }
 
 - (void)coloursView {
-    if (self.traitCollection.userInterfaceStyle == UIUserInterfaceStyleLight) {
-        self.view.backgroundColor = [UIColor colorWithRed:0.949 green:0.949 blue:0.969 alpha:1.0];
-    } else {
-        self.view.backgroundColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:1.0];
-    }
+    self.view.backgroundColor = [UIColor clearColor];
+    UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark];
+    UIVisualEffectView *blurEffectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];
+    blurEffectView.frame = self.view.bounds;
+    [self.view addSubview:blurEffectView];
+    [self.view sendSubviewToBack:blurEffectView];
 }
 
 - (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection {