Did you ever decide?We‘re trying to make the same decision right now.

We're in the middle of construction right now. We kept going back and forth and eventually compromised with something in between, a little darker than Tahoe Blue and lighter than Midnight Blue. We're going with Aqua Blue, but with two extra bottles of blue to make the background to the pebble darker (the standard background is light). We were told that Tahoe Blue often has a green tint and that Midnight Blue is probably too dark. Aqua Blue is in between as far as darkness, and is more of a pure blue without the green tint.