[FIX] 10 colors in BASE10 colors for visualization

[AlexVCaron]

Quick description

There was only 8 colors in the BASE10 colors for visualization (with a white and a grey). Fixed, now there is 10, and they are all colors, no grayscale.

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Type of change

Check the relevant options.

• [x] Bug fix (non-breaking change which fixes an issue)

Provide data, screenshots, command line to test (if relevant)

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Checklist

• [x] My code follows the style guidelines of this project (run autopep8)
• [x] I added relevant citations to scripts, modules and functions docstrings and descriptions
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I moved all functions from the script file (except the argparser and main) to scilpy modules
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 68.14%. Comparing base (17b9a4a) to head (3191a0b).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #999 +/- ## ======================================= Coverage 68.14% 68.14% ======================================= Files 419 419 Lines 21369 21369 Branches 3216 3216 ======================================= Hits 14561 14561 Misses 5533 5533 Partials 1275 1275 ``` | [Components](https://app.codecov.io/gh/scilus/scilpy/pull/999/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=scilus) | Coverage Δ | | |---|---|---| | [Scripts](https://app.codecov.io/gh/scilus/scilpy/pull/999/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=scilus) | `69.14% <ø> (ø)` | | | [Library](https://app.codecov.io/gh/scilus/scilpy/pull/999/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=scilus) | `66.66% <100.00%> (ø)` | |