Sumproduct Function

I've been using the formula =SUMPRODUCT(--(COUNTIF(A1:T1,A2:T2)>0)) for comparing two list's of numbers and getting a count for matching numbers, but when I try to add a third list I get "too many arguements for this function" error. Is there another way to write this so it will work for 3 or more lists of numbers? Also, If I want to have the matching numbers from each list highlighted in color, how do I add that to the function? Thanks