[Meta] New color palette

[teresaalvarezsoler]

Default new color palette

New default color palette more aligned with Elastic brand colors and that will make users' dashboards more beautiful and visually appealing by using brighter colors that work better with both light and dark modes. We will also introduce a new high contrast palette for the visually impaired users.

Tasks

Beta Give feedback

1. [Lens] New color palette implementation for testing #192848
   Feature:Lens Team:Visualizations +2
2. Clean-up issues with the testing implementation (above)
3. Allow users to try the new color palette #192849
   0 of 7
   Feature:Lens Team:Visualizations impact:medium +3

Nice-to-haves

• Add advanced configuration to set the high contrast palette as the default

[elasticmachine]

Pinging @elastic/kibana-visualizations (Team:Visualizations)