Draw correctly the time in Fluent TimePicker

src/GraphicsControls/Handlers/Button/FluentButtonDrawable.cs

@@ -13,13 +13,14 @@
             var height = dirtyRect.Height;
 
             var defaultBackgroundColor = Fluent.Color.Primary.ThemePrimary.ToColor();
+
+            if (button.Background != null && button.Background is SolidPaint solidPaint)
+                defaultBackgroundColor = solidPaint.Color;
+
             var disabledColor = Fluent.Color.Background.NeutralLighter.ToColor();
 
             var backgroundColor = button.IsEnabled ? defaultBackgroundColor : disabledColor;
 
-            if (button.Background != null && button.Background is SolidPaint solidPaint)
-                backgroundColor = solidPaint.Color;
-
             var border = new LinearGradientPaint
             {
                 GradientStops = new GradientStop[]

src/GraphicsControls/Handlers/TimePicker/FluentTimePickerDrawable.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Globalization;
 
 namespace Microsoft.Maui.Graphics.Controls
 {
@@ -119,7 +120,7 @@ namespace Microsoft.Maui.Graphics.Controls
             canvas.FontColor = textColor;
             canvas.FontSize = fontSize;
 
-            canvas.DrawString(date.ToString("tt"), divided * 2, 0, divided, height, HorizontalAlignment.Center, VerticalAlignment.Center);
+            canvas.DrawString(date.ToString("tt", CultureInfo.InvariantCulture), divided * 2, 0, divided, height, HorizontalAlignment.Center, VerticalAlignment.Center);
 
             canvas.RestoreState();
         }