Maybe a little tweaking needed in coloration, but they have two full years to figure that out.
At the end of the day, people will buy it because it's blue milk, but they'll only come back for more if it tastes good so I'd say taste is a bigger worry point for me.
Because Star Wars doesn't have much more from a F&B standpoint to work with pretty much other than the bread Rey ate at the beginning of Ep. 7.