message: enforce display of vec4f widgets
diff: @@ -589,6 +589,7 @@ static std::map<std::string, WidgetGenerator> widgetGenerators = {
  {"vec2f", generateWidget_vec2f},
  {"vec3i", generateWidget_vec3i},
  {"vec3f", generateWidget_vec3f},
  + {"vec4f", generateWidget_vec4f},
  {"rgb", generateWidget_rgb},
  {"rgba", generateWidget_rgba},
  {"affine3f", generateWidget_affine3f},
  