feat: update avatar colors [HOMER-2193]

[Lelith]

Purpose of PR

For the Avatar component it will

• introduce 3 custom colors

• fix muted style (transparent stacked avatars where shining trough each other)
  before

after

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Latest commit: 39b8175

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Name	Status	Preview	Updated (UTC)
forma-36	✅ Ready (Inspect)	Visit Preview	Jul 26, 2023 2:36pm

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
CommonJS	129.42 KB (0%)	2.6 s (0%)	140 ms (+82.1% 🔺)	2.8 s
Module	125.88 KB (0%)	2.6 s (0%)	74 ms (+8.12% 🔺)	2.6 s