I have never seen this blue frame stating that the domain is for sale. This prompted my curiosity so I decided to do some investigation.
DNS Does Not Point to Sedo Infrastructure
I decided to do a DNS lookup on the domains concerned and network-tools.com provided the following results.This clearly shows that the domains are not pointing to ns1.sedoparking.com/ns2.sedoparking.com as they "should", instead they point to two nameservers at domcollect.com. In the comming days I will do some more investigations and post an update on the reply I get from Sedo.com