diff --git a/Samples/MobileBuyIntegration/MobileBuyIntegration/AppDelegate.swift b/Samples/MobileBuyIntegration/MobileBuyIntegration/AppDelegate.swift
index 45a15d92..8abc9aed 100644
--- a/Samples/MobileBuyIntegration/MobileBuyIntegration/AppDelegate.swift
+++ b/Samples/MobileBuyIntegration/MobileBuyIntegration/AppDelegate.swift
@@ -33,7 +33,9 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 			$0.colorScheme = .automatic
 
 			/// Enable preloading
-			$0.preloading.enabled = true
+			$0.preloading.enabled = false
+
+			$0.progressBarEnabled = true
 
 			/// Optional logger used for internal purposes
 			$0.logger = FileLogger("log.txt")
diff --git a/Sources/ShopifyCheckoutSheetKit/CheckoutWebView.swift b/Sources/ShopifyCheckoutSheetKit/CheckoutWebView.swift
index ee963433..87bf786f 100644
--- a/Sources/ShopifyCheckoutSheetKit/CheckoutWebView.swift
+++ b/Sources/ShopifyCheckoutSheetKit/CheckoutWebView.swift
@@ -154,6 +154,13 @@ class CheckoutWebView: WKWebView {
 			injectionTime: WKUserScriptInjectionTime.atDocumentStart,
 			forMainFrameOnly: true
 		))
+
+		isOpaque = false
+		backgroundColor = ShopifyCheckoutSheetKit.configuration.backgroundColor
+
+		if #available(iOS 15.0, *) {
+			underPageBackgroundColor = ShopifyCheckoutSheetKit.configuration.backgroundColor
+		}
 	}
 
 	deinit {
diff --git a/Sources/ShopifyCheckoutSheetKit/CheckoutWebViewController.swift b/Sources/ShopifyCheckoutSheetKit/CheckoutWebViewController.swift
index 21ce9bc4..4e20415c 100644
--- a/Sources/ShopifyCheckoutSheetKit/CheckoutWebViewController.swift
+++ b/Sources/ShopifyCheckoutSheetKit/CheckoutWebViewController.swift
@@ -72,6 +72,8 @@ class CheckoutWebViewController: UIViewController, UIAdaptivePresentationControl
 		navigationItem.rightBarButtonItem = closeBarButtonItem
 
 		checkoutView.viewDelegate = self
+
+		view.backgroundColor = ShopifyCheckoutSheetKit.configuration.backgroundColor
 	}
 
 	required init?(coder: NSCoder) {
@@ -86,11 +88,13 @@ class CheckoutWebViewController: UIViewController, UIAdaptivePresentationControl
 
 	// MARK: UIViewController Lifecycle
 
+	override public func viewWillAppear(_ animated: Bool) {
+		view.backgroundColor = ShopifyCheckoutSheetKit.configuration.backgroundColor
+	}
+
 	override public func viewDidLoad() {
 		super.viewDidLoad()
 
-		view.backgroundColor = ShopifyCheckoutSheetKit.configuration.backgroundColor
-
 		view.addSubview(checkoutView)
 		NSLayoutConstraint.activate([
 			checkoutView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
diff --git a/Sources/ShopifyCheckoutSheetKit/IndeterminateProgressBarView.swift b/Sources/ShopifyCheckoutSheetKit/IndeterminateProgressBarView.swift
index d28ab196..bdbb20a3 100644
--- a/Sources/ShopifyCheckoutSheetKit/IndeterminateProgressBarView.swift
+++ b/Sources/ShopifyCheckoutSheetKit/IndeterminateProgressBarView.swift
@@ -17,10 +17,10 @@ class IndeterminateProgressBarView: UIView {
 
 		NSLayoutConstraint.activate([
 			progressBar.topAnchor.constraint(equalTo: topAnchor),
-			progressBar.heightAnchor.constraint(equalToConstant: 4),
+			progressBar.heightAnchor.constraint(equalToConstant: 1),
 		])
 
-		progressBar.tintColor = .systemGray5
+		progressBar.tintColor = ShopifyCheckoutSheetKit.configuration.spinnerColor
 	}
 
 	override func didMoveToSuperview() {
@@ -43,7 +43,6 @@ class IndeterminateProgressBarView: UIView {
 	}
 
 	func startAnimating() {
-		print("start animating")
 		alpha = 1
 		isHidden = false
 	}