432 "B" engine, Crower hyd street cam with .50 valve lift, Comp single valve springs with 120# seat and under 300# open. Smith Bros ball/cup pushrods with thru the pushrod oiling activating Crane 1.5 ratio iron rocker arms. After approx 600 miles the cup ends of most of the pushrods (not all of them) are now blue in color, turning to straw/wheat color and back to natural metal color within approx 1 inch from cup ends. The Crane rocker arms do provide oil to the rocker arm adjusters. I added the pushrod oiling thinking it would be an added benefit, but now the color change. I am wondering if I should go back to a solid cup pushrod, where the full cup shape would help support an oil film better than the hollow pushrods where a portion of the pushrod cup is not there due to the oil passage. Any comments or experience would help. I plan on talking with Smith Bros, but also wanted your user feedback. Thanks in advance.