There,s a similar thread on at the moment about the cranks , goin by what a few have said the colouring is normal due to heat treating and your bearings appear to be the standard ford sizes although i could be wrong i,m certainly no engine expert just keen here. People are using the original bottom end engine parts for your power level this is common .
HTH
Try searching a few threads on here to gain more info and more importantly maybe see who can advise you best.