It could be the ph levels in the soil. They do affect the coloration of roses to some degree.

It might have been mis-labelled! Have you still got the receipt? A word with the GC or Nursery might be a good idea. Take a flower with you, or a photo.

This happened to me twice, I even got sent replacements and was looking forward to a lovely blue display, but alas all white again.

It needs slightly acidic conditions - use spent tea bags, coffee grinds or camellia feed. Far more likely that the label was mixed up if you bought it in a garden centre. Personally I'd only buy a rose if it was actually in bloom (same goes for camellias)

thanks all, i have emailed the place where i got them from, to see what they have to say, urbanite im interested in the tea bag thing, because im a right tea belly and wondered what could be done with them, please expand

Used tea leaves just add a short-term mild acid boost. Lots of ways of doing the same - particularly for pot plants such as adding a glug of white vinegar to the watering can.

Do you make tea in a pot - instead of pouring the dregs down the plug hole, pour it around your rose(s)!

If you want to grow one acid-loving plant in a pot and don't want to get a sack of ericaceous compost, you can make your own by adding some spent coffee grounds to ordinary compost (apparently Starbucks** will oblige - I get mine from my work coffee shop)

** other coffee shops are available