The Decode not generate background colors and row heights

```
What steps will reproduce the problem?
1.Create a new xls with de excelLibrary contains test cells with style
defined by code:

sheet.Cells[0, 0] = new Cell("Test");
sheet.Cells[0, 0].Style = new CellStyle();
sheet.Cells[0, 0].Style.BackColor = System.Drawing.Color.Green;

2.Save sheet

What is the expected output? What do you see instead?
Cell[0,0] ="Test" with green background color. And...nothing, only the
value "Test" was printed.

What version of the product are you using? On what operating system?
tried two versions: ExcelLibrary_20090219 and ExcelLibrary_20090331

```

Original issue reported on code.google.com by `marcusvm...@gmail.com` on 15 Sep 2009 at 4:27

Reproduce the issue with the shown Cell and CellStyle example, then trace the ExcelLibrary decode path for style and row-height handling. Done means a saved and decoded workbook preserves the cell's green background and the expected row height.

Written by the indexing model from the issue text.