# Hide node parameter in material tab

I use Blender 2.8. Given following node tree:

I'm only interested in the color value and I'd like to ignore this Roughness parameter. In Shader Editor I can use either H or Crtl+H to hide what I'm not using:

The parameter is however still visible in the material tab:

Can I hide it too, so the only thing visible for this material would be a color input?