On Saturday, June 8, 2013 4:34:02 PM UTC-5, woodchucker wrote:
Sounds about right, and like you suspected I think the hide glue is reacting with the titebond causing the blue hue... -- Jeff

I doubt the Titebond-Hide (old) glue is reacting. I've never seen anything as that.

Another possibility: Your initial repair didn't hold, possibly because of old glue remaining in the hole and the new glue didn't bond properly. The table owner tried to use their (there, they're, thar) kid's (blue colored) craft glue to repair it, and didn't tell you they tried to repair it that way.

Sonny