C#根據表格偶數、奇數加載不同顏色

 //偶數隨機
  Random evenRanm = new Random();
  //奇數隨機
  Random oddRanm = new Random();
  string[] listColor = new string[]
   {
    "#2BB669","#FF5750","#39AFEA","#9A0089",
    "#00CC6A","#717FF9","#4A5459","#00B7C3",
    "#0078D7","#E2AB12"
   }; 
   //記載窗體執行
   //偶數集合
   List<string> evenNum=new List<string>();
   //奇數集合
   List<string> oddNum = new List<string>();
   for (int j = 0; j < listColor.Count(); j++)
   {
    if (j % 2 == 0)
    {
     evenNum.Add(listColor[j]);
    }
    else
    {
     oddNum.Add(listColor[j]);
    }
   }
   //對List賦值
   List<Role_Info> list = new List<Role_Info>();
   list.Add(new Role_Info() { Role_Name= "超級管理員"});
   list.Add(new Role_Info() { Role_Name= "超級用戶" });
   list.Add(new Role_Info() { Role_Name = "教師" });
   list.Add(new Role_Info() { Role_Name="院長"});
   list.Add(new Role_Info() { Role_Name = "校長" });
   list.Add(new Role_Info() { Role_Name = "普通用戶" });
   list.Add(new Role_Info() { Role_Name = "Test" });
   list.Add(new Role_Info() { Role_Name = "用戶" });
   list.Add(new Role_Info() { Role_Name = "測試用戶" });
   list.Add(new Role_Info() { Role_Name = "Student" });
   list.Add(new Role_Info() { Role_Name = "Teacher" });
   list.Add(new Role_Info() { Role_Name = "游客" });
   list.Add(new Role_Info() { Role_Name = "學生" }); 
   Button btn=null;
   for (int i = 0; i < list.Count; i++)
   {
    btn = new FButton();
    if (i%2==0)
    {
     int even = evenRanm.Next(evenNum.Count());
     btn.Content=list[i].Role_Name;
     btn.Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString(evenNum[even]));
    }
    else
    {
     int odd = oddRanm.Next(oddNum.Count());
     btn.Content=list[i].Role_Name;
     btn.Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString(oddNum[odd]));
     }
   } 
    //最后將Button添加到控件