Visualizing JS Bootup Time

Right now I added js bootup time int he level overview dialog at the end of every level. But wondering if we could visualize it better - e.g. as trail to every asteroid. JS asteroids with much processing would have long traisl, otherwise short or no trail. Code example for that would be here:
https://phaser.io/examples/v2/arcade-physics/ship-trail

Start by reading the level overview dialog where JS bootup time is currently shown at the end of each level. Review the linked Phaser ship-trail example and determine how bootup values should map to trails on JS asteroids. Done means the timing is visualized in the game rather than only reported in the dialog.

Written by the indexing model from the issue text.