Hi Folks - New to the Forum and Morgan Ownership so I hope you can assist with a question re Plugs.
I recently bought a 1 owner 2006 Plus 4 with 32000 miles on it. Car is immaculate and appears to have been very well cared for by the original owner who, as a retired engineer, did most of his own servicing. I am not sure if the plugs are original to the car and I decided to pull a couple of them to check condition.
The Engine is the 2.0 Duratec. Ford Spec say Iridium Plugs should be fitted and that appears to be what I have however I'm not sure what make they are - Any Ideas? (See Photo Album)

The main point of my question however is the Red Colour of the centre porcelain - I've never seen that before and don't know if its an indicator of engine condition or whether it could have been caused by a petrol additive.
Any thoughts would be appreciated and whether you think its neccessary to change the plugs at this time.

The car appears to run great but I don't have anything to compare it with - not having owned a Morgan before. It starts well too. Is it a case of "If it ain't broke - don't fix it" ?

I can't work out how to post a photo of my plugs so please click on the below link to see my photo album showing the issue.

https://photos.app.goo.gl/ZuG9CRXgwLE6ouop8

Many Thanks for your help