In acid comditions hydrangeas want to be blue. In alkaline they want to be red. ,if you want blue hydranges there are "bluing" compounds you can use. The old traditional way was to scatter iron filings around them.
Laney John, I,think the very best advice is to test your soil. If its acid go buy a good blue variety. If its alkaline buy a good red variety. Whites are unaffected. Often blue varieties treated with gluing agents simply get bit purplish and red varieties grown on acid soil do,the same. Get the variety for your comditions and then grow superb specimens
I have moved hydrangea too without problems but I think Criss's hydrangea might be too big for,that