Make it clearer that the loop animation tracks are working properly.

[Exairnous]

Is your feature request related to a problem? Please describe.
A couple of users have mentioned that they've been confused by the loop animation component greying out the tracks when they're added and thinking this means there is a problem.

Describe the solution you'd like
There isn't really a clear solution to this, some possible solutions are:

• Don't grey the tracks out and use a label instead of a property to prevent editing. (The downside to this is that actual errors won't show up as well).
• Don't grey out the tracks the same as above, but grey out the rows with errors. (Preserves the contrast between working tracks and ones with errors, but then it isn't as obvious that you can click on the tracks with errors for more information, although there is a message).
• Add a checkbox icon to working tracks.
• Keep everything as it is, but document that tracks are greyed out unless there is an error.

[keianhzo]

Maybe a solution for this could be to add an icon to the row that clearly indicates the state (ie. green/red dot)