Default Route MPLS VPN3 and Hub and Spoke?

Hey guys, I have this topology,now is working my vpnl3 after a few adjusts, but now I would like to propagate a default route to all to my peers in this vpn, for example all routers in blue, should receive a default route from the router with a black cicle, I tought in create a static route and redistribute into my eigrp that I use for the l3 vpn,but my question is, how to get access to the internet, because my PE3 that is connected with this client has accesss, maybe if I do a nat and put the interface of PE3 into the OSPF used to the internet ?I dont know if makes sense:

https://ibb.co/HBxQcJN

and my last question I promise, at this moment, all routers in L3 mpls vpn are able to talk with all routers, I would like to change this for hub and spoke for test, how I could do it,at the moment I have this:

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address-family vpnv4

neighbor 172.25.1.1 activate

neighbor 172.25.1.1 send-community extended

neighbor 172.30.3.3 activate

neighbor 172.30.3.3 send-community extended

exit-address-family

thanks for any ideia.