message: Change default colormap
diff: @@ -359,7 +359,7 @@ namespace RINGMesh
  std::string name_;
  index_t coordinate_{ 0 };
  - GLuint colormap_texture_{ 0 };
  + GLuint colormap_texture_{ 5 };
  double minimum_{ 0 };
  double maximum_{ 0 };
  