Muti segment selection of a sketch of the 3D displayed in a drawing

Hello


I would like to make multiple selection on the lines of a sketch of the 3D displayed in my drawing; in order to apply different  colors to these lines.

I've already tried to apply all my colors in the 3d sketch and is checked the lsc lsca box for the colors but it doesn't work.

Today the only thing that speeds up a little is to have the channel selected but it's long qd even if another solution exists I'm taker.


Kind regards