Coloring display when tree is missing attribute

[trvrb]

This bug was discovered for seasonal flu here: nextstrain/seasonal-flu#33 and can be seen live at https://nextstrain.org/flu/seasonal/h1n1pdm/na/2y?c=ep. Basically, the auspice config specifics ep as a coloring attribute, but ep does exist as an attribute anywhere in the tree. This could be viewed as augur user error (and we should fix this in seasonal flu), however, it would be nice if auspice handled this a bit more gracefully.

I would say this is low priority, but I suspect not too difficult to deal with.

[jameshadfield]

Good find. Did augur validate pick this up? I hope that after augur v6 all the builds will start validating the JSONs, but I agree that auspice should handle this better 👍

[trvrb]

Looks like this resolved itself. I'm closing the issue now.