Compare values of two text Boxes and Highlight the differenc

I have Two text Boxes

1st Text Box Contains 
 KiranKumar
  BE
 Bangalore 

2nd Text Box Contains
  Arunkumar
  MCA
 Bangalore


On Button Click Event I have to Compare these two textbox values and then i have to change Color of BE and MCA to Red ... Becoz These are two mismatches...(Color of mismatched text has to be changed in text Box only)