How do I change the border color of a PdfPCell?

I am trying to set border colors of table cells. No matter what I try, the border color is not changing - it's always black! What am I doing wrong?

PdfPTable table = new PdfPTable(2);
PdfPCell cell1 = new PdfPCell(new Phrase("Cell 1"));
cell1.setBorderColorTop(new BaseColor(255, 0, 0));
cell1.setBorderColorBottom(BaseColor.BLUE);
table.addCell(cell1);
PdfPCell cell2 = new PdfPCell(new Phrase("Cell 2"));
table.addCell(cell2);

Please take a look at the ColoredBorder example. It shows the solutions of your problem.

Here is a short piece of code that shows how to create a cell with different borders in iText 7:

PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
Document doc = new Document(pdfDoc);
Table table;
table = new Table(2);
Cell cell;
cell = new Cell().add("Cell 1");
cell.setBorderTop(new SolidBorder(Color.RED, 1));
cell.setBorderBottom(new SolidBorder(Color.BLUE, 1));
table.addCell(cell);
cell = new Cell().add("Cell 2");
table.addCell(cell);
doc.add(table);
doc.close();

The result looks like this:

Different cell border widths and colors

Note that SolidBorder constructor has two parameters: the color and the width. You can chose any type of border you need: DashedBorder, DottedBorder, DoubleBorder, GrooveBorder, InsetBorder, OutsetBorder, RidgeBorder, RoundDotsBorder.

Click How do I change the border color of a PdfPCell? if you want to see how to answer this question in iText 5.