Leftover 2.5 Ltr Eggshell Paint

We have a part used 2.5 ltr can of eggshell paint going free - half / three-quarters full. 

Mixed at Chris Stevens in Holloway Road, it’s 18 months old so within the recommended use time for cans of opened paint.

The colour wasn’t right for us in the end.

It’s a Johnstone Eggshell. The colour is somewhere between F&B Light Blue, Parma Gray and Lulworth Blue from what I remember. Photo of paint can drip below.