Way to customise the segment's bounds

[vivekd95]

Hi, @chrisn

As you can notice in the attached screenshot, that segment reveals its timestamp for both bounds (start time and end time). Could you let me know if we can update the background color and font color of this text? If so, please guide me through it. If not, I think this is a good option for the users. 

[chrisn]

One way to do this is to use the createSegmentMarker option and write your own custom marker code, which could be a modified version of DefaultSegmentMarker.

Alternately, we could add more options. At the moment, the color can't be changed (it's hard-coded here).

There is a bug here, though, which I'll fix. The marker timestamp font should be controlled by the existing fontFamily, fontSize, and fontStyle options, and these aren't being applied.