If you have placed the view on the layout (as a drawing) then it will be using the same Graphic Overrides, Renovation Filter, Layer, Scale, etc., as set in the View Settings.
Have a look at the 'Drawing Settings' of the drawing in the layout.
You may be using a different pen set to the one you have used in the view.
It is possible to change the pen set used there so pens 60 and/or 253 may be yellow in that pen set rather than black as in the view pen set.
Barry.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10