Styling broken for replies

[mogzol]

Describe the bug: Messenger recently introduced message replies. The styling is a little broken for them.

Steps to reproduce:

1. View a message reply (particularly a reply that is only emojis, so not in a bubble)
2. It won't look good

Screenshots:

Additional context: I was able to make it look pretty good by adding the following styles:

/* replies */
._4k7a {
  color: rgba(255, 255, 255, .5) !important;
}

._3058._s1-._6e6n {
  border-color: transparent !important;
  background-color: #2d2d30 !important;
}

._pyf {
  background-color: rgba(255, 255, 255, .3) !important;
}

[auscompgeek]

Keeping this open until I actually fix the emoji-only messages.