How would i make a blue rose by genetic modification?

i have this school report thingy on how to make a blue rose and i have to explain what blue gene im taking from what flower and blah! blah! blah! so yeh!

I THINK THAT YES
http://www.biologynews.net/archives/2005/04/06/_roses_are_red_and_now_blue_with_the_help_of_csiro_technology.html