While waiting to find the solution to the problem, you can use the "line color" tool to have all the lines black.
Is it possible that your colleague was able to set the folds to red as the default? At this point, try the gt22 solution which is to save the part in copy by changing its name and then see with it so that you have the same default settings.
Which solidworks are you on?
can you put in the same folder a plan + the room?
May the force be with you
EDITE/ put = post so that we can look at it
In the meantime, yes, we find solutions, we try to understand :) We are all under solidworks 2016 and yes we can put a plan and the part in the same folder.
"We are all on solidworks 2016"
Of the same service pack version as well?
Have you checked that you are using the default references of the component?
Right-click on the view.
Component Line Font...
A window will open and the "Use default component references" option should be checked.
I don't know if it can play on the colors...
Yes, the same version of the pack as well:)
Yes, we are by default when it comes to the line font of the component.
Is it a solidworks bug in this case?
I don't see what we could change as a parameter...
It's possible, our colleague is coming to our site next week, I'll look at his parameters:)
Thank you for your answers anyway:)