How to create a dashed line with alternating colors and gaps in between

[ambert12698468]

I'm trying to create a dashed line triangle with alternating colored dashes and white spaces between. How do I do that? 

I've tried expanding the appearance and then seleting one dash to recolor it, but then it recolors the whole line. I've also tried ungrouping that line and it still recolors the whole line. I want the segments separate so that I can color them without it changing the whole line. 

[Monika Gause]

Make a pattern brush

[Met1]

Use the appearance panel and add a second or more paths, you can change the stacking just by dragging, play with the gap size to change the overlaps...

[michelew83603738]

Nice!

[tromboniator]

Create a path with three strokes: top stroke whitewith desired dash length and same gap length: middle stroke with first color, dash length and gap 2× top stroke values; bottom stroke second color, no dash. Save as Graphic Style.

Be sure dashes have this setting:

Peter

Edit: You might want to increase the stroke weight of the white gaps a bit (1 pt?) so that there's no hint of the underlying color at the edge.

In addition, if you want the white gaps to be invisible, in the Appearance panel set the opacity to 0%, then in the Opacity settings for the entire path click on the checkbox for Knockout Group, either once or twice until the ✓ appears. If it's a dash - , click again. This will make not only the white dashes disappear, but also the underlying second color.