I have a excel sheet, I need to color the Row - (plz dont send me the copy paste code & plz go through the requirment)

I have a excel sheet Which Contain this type of rows & coloums(Below) .
As per my requirement I am getting the value of phone  say (String PhoneNo- 565778 ).
 Now I have to serch the ROW which contain that value"565778".
 After that  I need to color that Row Yellow, Or I can Bold that Row also.

Excel (Sheet1)

Name     Address       Phone                             
                                                            
x            ddddd         123456                             
y            mmmm        676868                             
z            jshcjh          565778                            
n            hghhh         878766



Please let me know the Code in C#.

Regards
RAJ.