Transparent tracks in track selector

Description

On single player example here - https://videogular.github.io/videogular2-showroom/#/single-player when you click the cc button, there’s a select element with a list of subtitle tracks. However, labels are not visible due to the

vg-track-selector select.trackSelector {
  ...
  color: transparent; // ?
}

css rule. Is this particular line intended for something else, or it’s just a bug?

Expected Behavior

Labels in select element are visible, i.e. black text on white drop down.

Actual Behavior

Labels in select element are not visible due to the css rule, i.e. white text on white drop down.

Steps to Reproduce

If this is an issue, describe the steps you took to see the issue. If this is a feature, delete this block.

1. open https://videogular.github.io/videogular2-showroom/#/single-player
2. click cc button

Attachments

Try to include screenshots for bugs or design assets for enhancements

Problem
Track labels in <select> aren’t visible

[Elecash]

@impankratov fixed!

[impankratov]

@Elecash it’s pretty easy to fix, just add a rule for option:

vg-track-selector select.trackSelector option { // targeting only <option> tag
    color: #000; 
  }

If that’s all that needs to be done, I can make a PR