Enter “s annotation” in Start menu and choose Line and Symbol Graphs - Multi-line-plot with Special Position Annotation Line sample
Highlight all data in book and plot Browser graph: Color Lines
Select all plots on left.
Click on any plot and from mini toolbar Group tab, click Line color to change it to e.g. Bold1
==> The colors are not red, blue, green purple.
If go to Plot Details ? Group tab, the Line Color increment is stretch.