Plot3D[{(x^2)-(y^2),2},{x,-5,5},{y,-4,4},PlotStyle->{Directive[Opacity[0.8],RGBColor[0,0.2,1],Specularity[White,50]],Directive[Opacity[0.8],Orange,Specularity[White,50]]},AxesLabel->{Text[Style["x",FontFamily->"Times New Roman",Italic,Black,30]],Text[Style["y",FontFamily->"Times New Roman",Italic,Black,30]]},AxesOrigin->{0,0,0}]