Rhino 7 - how to change background color via c#s

maje90 · August 5, 2025, 12:47pm

Hi all!

How to change the background color of the current active viewport via c#?
(macro, rhinoscript or python are fine too)

Not talking about rendered mode, but for modes like shaded or wireframe.

Thanks in advance.

AndersDeleuran · August 5, 2025, 12:55pm

In Python it would be:

import Rhino as rc
rc.ApplicationSettings.AppearanceSettings.ViewportBackgroundColor = SomeColor

maje90 · August 5, 2025, 4:45pm

That’s it! Thanks!

11159 · August 6, 2025, 2:42am

I found some useful information about the color of Appearance, so I will include a link to it.

github.com/mcneel/rhino-developer-samples

rhinocommon/cs/SampleCsCommands/SampleCsAppearanceColors.cs

8

using Rhino;
using Rhino.ApplicationSettings;
using Rhino.Commands;
using System.Drawing;

namespace SampleCsCommands
{
  public class SampleCsAppearanceColors : Command
  {
    public override string EnglishName => "SampleCsAppearanceColors";

    protected override Result RunCommand(RhinoDoc doc, RunMode mode)
    {
      //
      // Colors from Appearance page
      //

      Print("Command prompt");
      PrintColor("Background", AppearanceSettings.CommandPromptBackgroundColor);
      PrintColor("Text color", AppearanceSettings.CommandPromptTextColor);

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Rhino 7 - how to change background color via c#s

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