Making Visual Studio perfect

References:

Microsoft.VisualStudio.ComponentModelHost
Microsoft.VisualStudio.Text.Logic
Microsoft.VisualStudio.Text.UI.Wpf

C#

using EnvDTE;
using EnvDTE80;

using Microsoft.VisualStudio.ComponentModelHost;
using Microsoft.VisualStudio.Text.Classification;

public class E : VisualCommanderExt.IExtension
{
	public void SetSite(EnvDTE80.DTE2 DTE, Microsoft.VisualStudio.Shell.Package package)
	{
        SetClassificationOpacity(package as System.IServiceProvider, "UnnecessaryCodeDiagnostic", 1);
    }

	public void Close()
	{
	}

    private bool SetClassificationOpacity(System.IServiceProvider serviceProvider, string classification, double opacity)
    {
        IComponentModel componentModel = (IComponentModel)serviceProvider.GetService(typeof(SComponentModel));
        IClassificationTypeRegistryService registryService = componentModel.GetService<IClassificationTypeRegistryService>();
        IClassificationFormatMap classificationFormatMap = componentModel.GetService<IClassificationFormatMapService>().GetClassificationFormatMap(category: "text");
        IClassificationType classificationType = registryService.GetClassificationType(classification);
        if (classificationType == null)
            return false;

        var properties = classificationFormatMap.GetExplicitTextProperties(classificationType);
        var newProperties = properties.SetForegroundOpacity(opacity);
        classificationFormatMap.SetExplicitTextProperties(classificationType, newProperties);
        return true;
    }
}