Q.My Rose Of Sharon Changes Colors Last Year They Were White This Year Pink
Is this normal??

Certified GKH Gardening Expert
Yes. Though your shrub's flowers appear white, they are actually what is known as "bicolored". This just means that there is still a shade of pink within the bloom. Sometimes, this shows more than other times.
This is going to be a normal occurrence, and there will be nothing to be done.
Here is an article that will help you with some tips:
https://www.gardeningknowhow.com/ornamental/shrubs/rose-of-sharon/rose-of-sharon-bush.htm