question on snake feaces

hi all!
i have a question about my snake feaces.
i got my second baby ball, a cinnamon male thats about 4 months old.
he was getting feed on live mice, but i switched on f/t baby rats when it came to his first feeding with me.
the thing is, that 3 days after he ate, he had diarrhea. i was away and when i came and checked on him, a part of his fauna was covered in brown.
now its all clean and washed, but it m kinda worried. could that be cause of the food change?
my other ball, the normal, that was getting f/t mice-rats had normal feaces.
thanx all in advance!

It's not normal no. It could be a sign of parasites. After it's next bowel movement if it still does not look right I would put some in a zip lock bag and take it to the vet for a fecal exam.

yes def take a sample to the vets

damn :S thanx for the answer guys..
i ll have some of them tested (i work in a lab so i have quick access) and try to search for a vet that knows something about snakes.. (hard to find em here... :( )
do i have to move him away from the other snake i have? their faunas are quite close atm.