using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html;

if (dsRecAdj.Tables[2].Rows.Count > 0)
                {

                    Button btn = (Button)e.Row.FindControl("btnSalvage");
                    btn.ForeColor = Color.Red;

                }

btn.ForeColor = System.Drawing.Color.Red;

btn.BackColor = Color.Green;

Button1.BackColor = Color.Red;

Button1.ForeColor = Color.Red;

Buttton1.BackColor = SystemColors.ButtonFace;
Button1.ForeColor = default(Color);
Button1.UseVisualStyleBackColor = true;