I am glad you love the formula ( it's a secret from Chanel and it has been a secret for a very long time ! ). A JC blush lasts for ever, that's the legend but it's quite true. The formula does last in time, provided it's kept away from light and wet places. It would be great if you could have some more, maybe Rose Initiale or Rose Ecrin if you want something very soft. Pink Explosion ( 1st European version ) is very soft, a candy pink that suits many carnations. Ultra Rose, Rouge, Plum Attraction are clearly bolder whereas Espiègle is really very pretty ( soft peachy blush ). I've heard Espiègle would be discontinued in France, well I don't really know more. Orchid Rose is being discontinued.
I also love Tumulte and Malice, both are easy-to wear and beautiful colours.
The palest JC blushes are Espiègle, Pink Explosion, Rose Ecrin in my opinion and experience.
Enjoy Star Dust, it's a very good choice for a 1st JC blush, there will be others I guess and honestly JC blushes are really very good, I couldn't do without !