I got to have a little hands on with these today.
That blue is absolutely gorgeous. Like a more refined, darker version of the coral S8 - which I also loved.
The lilac - aint lilac. It's pink. But also damn lovely.
Really impressed with the design tbh, they do feel strangely different to the S8 (minimally, but in a good way) which I'm here for.
I couldn't do much as they were bolstered down onto the tables and could only be lifted on a security pull thing so I couldn't grip it properly, but the Plus felt quite nice in the hand considering it's bigger. This is where I think the rounded screen comes into its own on bigger phones - even for my small hands it didn't feel uncomfortable at all.
I came away really impressed! People are gonna be really pleased with these phones I reckon.