Barry M haven't released any new Gelly polishes since 2023, they also seem to have changed their logo. Purple Rain is unique to the Gelly's but closest to Indigo nail paint which I've compared below;
Colour | Indigo
Finish | Cream
Opacity | Two Coats
Brush Type | Paddle Style
How Much | 10ml
Vegan | Yes
Cruelty Free | Yes
Purchased From | BarryM.com
Purple Rain has started to separate pigment in the bottle, may fade in the future;