test

src/AppModels/MinerStudio/Vms/GpuSpeedDataViewModels.cs

@@ -18,7 +18,7 @@ namespace NTMiner.MinerStudio.Vms {
         private int _cpuPerformance;
         private int _cpuTemperature;
         private string _maxTempText;
-        private SolidColorBrush _tempForeground;
+        private SolidColorBrush _tempForeground = WpfUtil.BlackBrush;
         private int _maxTemp;
 
         [Obsolete(message: NTKeyword.WpfDesignOnly, error: true)]

src/AppModels/Vms/CoinIncomeViewModel.cs

@@ -12,8 +12,8 @@ namespace NTMiner.Vms {
         private string _incomeCnyPerDayText;
         private readonly CoinViewModel _coinVm;
         private SpeedUnitViewModel _speedUnitVm = null;
-        private SolidColorBrush _backgroundBrush;
-        private SolidColorBrush _dayWaveBrush;
+        private SolidColorBrush _backgroundBrush = WpfUtil.TransparentBrush;
+        private SolidColorBrush _dayWaveBrush = WpfUtil.TransparentBrush;
         private DateTime _modifiedOn;
         private string _netSpeedText;
         private string _netSpeedUnit;

src/NTMinerWpf/Vms/IconsViewModel.cs

@@ -7,7 +7,7 @@ using System.Windows.Media;
 namespace NTMiner.Vms {
     public class IconsViewModel : ViewModelBase {
         public class Icon : ViewModelBase {
-            private SolidColorBrush _borderBrush;
+            private SolidColorBrush _borderBrush = WpfUtil.BlackBrush;
 
             public string Key { get; set; }
             public StreamGeometry Data { get; set; }