Help... Grout for Glass Waterline Tile

[parkinsmith]

Need help with grout color for glass waterline tile.
I photoshopped the grout color sticks into a pic of my tile to try and get an idea. I dont want to do white and I don't want to look at the pool and just see grout. Thinking it needs to blend a bit but don't think it is a good idea to go to dark? I assume grout gets darker over time ?
Coping is white marble with gray , plaster is Aqua White with cobalt and ice blue glass beads ) PR Blend) . Would be greatful for your thoughts and feedback.

 

[ajw22]

Silver Shadow or Silver Steamship as my choices. They both look about the same on my monitor.

The other two look dark and dirty.

 

[parkinsmith]

Silver Shadow or Silver Steamship as my choices. They both look about the same on my monitor.

The other two look dark and dirty.

Thanks so much I liked the silver shadow !