{description}
{excerpt}Returns whether or not the color is a custom color.{excerpt}
{signature:C#}
 public boolean IsCustomColor{ get; }
{signature}{signature:vb.net}
Public ReadOnly Property IsCustomColor() As Boolean
{signature}
{remarks}
For .xls files a custom color is a color that is not part of Excel's default color palette. For .xlsx files, a custom color is any color that has not been retrieved from the legacy palette (through [Palette.SetColorAt|Palette.SetColorAt(Int32, Int32, Int32, Int32)] or [Palette.GetColorAt|Palette.GetColorAt(Int32)]), and is not a system color.
{remarks}
{example}{code:csharp|title=C#}
bool customColor = clr.IsCustomColor;{code}
{code:vb.net|title=vb.net}
Dim customColor As Boolean = clr.IsCustomColor{code}

{example}