Is 1f roof felt ever green in colour?

[DIYNotIan]

At a risk of getting chucked of the forum for over posting, I'm back again!

Delivery for my roof job came while I was at work. Home now and just looking at it and the 1f felt they've delivered is unmarked and green.

Don't know if I'm over worrying, but wanted to check it's 1f and I've not been palmed off with shed felt. It's not like any 1f I've seen before, but I've only ever come across it on existing buildings and so don't know if it has changed over the years. It is very heavy and quite sticky, if that helps.

Would rather know now than later whether it's wrong!

Many thanks

 

[datarebal]

It's not 1f
It's simple shed felt in green
Fyi 1f is basically an under tile /slate felt

 

[DIYNotIan]

I suspected as much, thanks for confirming and explaining.

Bl00dy builders merchants!