TWP 1530 Natural over TWP Hollytone

Waited 9 months before doing the Restore a Deck Cleaner and Brightener process to my PT deck. Then applied 1 coat TWP 1515 Hollytone. Now almost a year later, deck appears to need 2nd coat. I have enough TWP 1530 Natural left over from another project to do the 2nd coat. Would there by any problem with using the TWP 1530 Natural over the Hollytone? I'm not terribly concerned if there was a color change. Thank you for your help.