Improve color contrast for many-team team games

**Is your feature request related to a problem? Please describe.**

Currently, I have noticed that when the team count is many (e.g. 7), the color palette seem to not have enough good colors, resulting in the following:
- Orange looks like red
- Cyan looks like green

**Describe the solution you'd like**

One of the following:
- Improved team color contrasts; or
- Dedicated highlighting of where team members are actually located, to eliminate color confusion altogether

**Describe alternatives you've considered**
N/A

**Additional context**
N/A

**Assignment**

- [ ] I'd like to be assigned to this issue and work on it myself

No files or tests are named. Start by running a seven-team game and locating the code responsible for team colors and member highlighting; compare the orange/red and cyan/green combinations described in the issue. Done means teams remain distinguishable at high team counts, either through improved contrast or clear member-location highlighting.

Written by the indexing model from the issue text.