Unprotect[ColorData];
Clear[new2];
new2 = {{"Hueeee", "", {}}, {"Gradients"},
  1, {0, 1}, {Hue[0.33, 1, 0.58], Hue[0.6, 1, 0.9],
   RGBColor[0.471412, 0.108766, 0.527016], Hue[0.9, 1, 0.9],
   Hue[1, 1, 0.9], Hue[0.1, 1, 0.9]}, ""};
AppendTo[DataPaclets`ColorDataDump`colorSchemes, new2];
AppendTo[DataPaclets`ColorDataDump`colorSchemeNames, new2[[1, 1]]];

AppendTo::rvalue: DataPaclets`ColorDataDump`colorSchemes is not a variable with a value, so its value cannot be changed.
AppendTo::rvalue: DataPaclets`ColorDataDump`colorSchemeNames is not a variable with a value, so its value cannot be changed.