I have a couple questions
So I open a envelope marked Tripolitania
And found a mix of stamps

The Russian stamps caught my eye
So I checked for the inverted center/backgrounds
No luck
Then moved on to the vertical/horizontal paper
(I'll get to that)
Right now I'm curious about colour variations
My old books don't get into details

Looking between 1883-1912
I have these listed as 2 green/dark Green or yellow green
And the 3 listed as either Carmine/rose red
I do try to put in the work to find things
Just maybe don't know what to search
So I gotta ask my first question
What am I missing? Forgery's,errors Or just again
Lack of understanding or resources
Thanks Again for the help