Hello cuginili,
Did you check your window pen set into your layout ?
View with the right pen set is able to use another pen set into different layouts.
You are able to modify your view to grayscale or black and white on layouts.
Christophe - FRANCEArchicad Designer and Teacher
Archicad 15 to 27 FRA FULL
OS 11.6 Big Sur - MacBook Pro 2017 - 16Go RAM
"Quality is never an accident ; it's always the result of an intelligent effort" John Ruskin