Particle System Following Edge of Object

I was wondering if it would be possible to have a particle system run along the edges of a cube. The main concept I want to achieve is having a blue sparks run along the edges of a cube and I am not sure if using a particle system is the best way to go about this. What about a path?

Also, if I were to have a cube and wanted stripes of colors run along the edges of a cube in a clockwide orientation, would I have to animate a 2d texture? With the stripes of colors being larger than particles that is. What if I wanted these stripes to give a glowing effect?

I am completely new to the unity scene so I appreciate any sort of help