Graphics3D::ltcol

Generated when the value of the LightSources option has the correct form (a list of pairs), but when the second element in each pair is not a valid color directive.

A valid color directive has the form GrayLevel[level], RGBColor[red, green, blue], CMYKColor[cyan, magenta, yellow, black], Hue[h], or Hue[h, s, b].

This message can occur when using Graphics3D or SurfaceGraphics expressions, or functions such as Plot3D, ListPlot3D, or ParametricPlot3D that generate such expressions.

Examples