I can see dulling on the main body of the rollers, but shiney at the end section. And the outer race seems to have scoring around it
For peace of mind I'd replace them while the box is apart and you have them in front of you.
the equation goes like this......how much does it cost to change them now...and how much does it cost in 100 miles ? don't forget time to assemble and then dis-assemble and re-do ?
ps do your crank rear main seal whilst you are there. thats what i would do .....but what do i know !
pps don't forget the piss-take factor, that everyone here will have....