They did produce the Anthony in a light colour called stone. It was a greyish beige, not quite as light as vanilla, I believe. Just chatted with my SA today about Anthony colours, and she said it was discontinued pretty soon after it came - not a huge success, it appears.
Yes I've seen it in stone. It's more of a green based neutral, nothing like vanilla which is a real clotted cream colour.
There's often a stone messenger at SM, there was one on Monday, I think it was the Joel.
The photo has leached the colour so it probably looks better IRL. The main problem I can see is that people tend to wear these bags with jeans. A colour that light is going to get terrible colour transfer.