How to set a background color of a Table Cell using iText?

While it is of course possible to use BaseColor, by default, it offers very limited choices.

I wonder how can i add my own custom color to the document?

...
        PdfPTable table = new PdfPTable(3);

        PdfPCell cell = new PdfPCell(new Phrase("some clever text"));
        cell.setBackgroundColor(BaseColor.GREEN);
        table.addCell(cell);
...