Resolve "Default bar colours for Insights"

Merged Rémy Coutable requested to merge 11186-default-bar-colours-for-insights into master

What does this MR do?

This change the default behavior for the Insights bar chart for time series to use a single color #428bca and use the apricot color #ffd8b1 for the last bar in the time serie.

This also fixes the use-case of a bar chart that is not for a time serie, as this wasn't working before.

Name Example
bar insights_example_bar_chart
bar (time series, i.e. when group_by is used) insights_example_bar_time_series_chart

Does this MR meet the acceptance criteria?

Conformity

Performance and testing

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

  • Label as security and @ mention @gitlab-com/gl-security/appsec
  • The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • Security reports checked/validated by a reviewer from the AppSec team

Closes #11186 (closed)

Edited by Rémy Coutable