[He's been around enough eyepatch-havers in his tiny life to pick up on that and know what it means, more or less - and he's quick to make a gentle accommodation.]

May you step back for a moment? If I can get to your other side, I'll be able to take a closer look at the swatches; then, I can lend you a hand if you would like. I have a very good eye for things like this.

[Two birds with one stone, then! He's sure it isn't comfortable trying to hold a conversation with someone whom you can't even see.]