[Lens] Support categorical coloring by name

[wylieconlon]

This feature was originally listed as a requirement of categorical color palettes in Lens, as it solves common problems that Lens users are facing.

Requirements

The user should be able to create a color palette by name, instead of by position.

Nice-to-have features

• The color assignment could "fall back" to another color palette
• Each bucketing function can have its own coloring UI, for example coloring the Filters function might look different than coloring Top values
• Sharability of color palettes (saved object approach POC)

Related to #95556

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[ghudgins]

+1 https://discuss.elastic.co/t/is-it-possible-to-set-custom-colors-for-lens-filters-on-a-pie-donut/280590

[ghudgins]

+1 https://discuss.elastic.co/t/remaking-legacy-visualizations-on-kibana-problems-with-colors-and-filters/282118

[Mauro-Rizzi]

+1 https://discuss.elastic.co/t/remaking-legacy-visualizations-on-kibana-problems-with-colors-and-filters/282118

I'm the OP of that post and I wanted to say that being able to assign any color to any parts of your visualizations is really important. While it might not seem so important from a data scientist point of view from a commercial point of view some companys will definetlly feel the app isn't appropiate if it can't use the company color scheme.

Plus a lot of times you have different visualizations that show different things about the same data and you want to sync colors manually instead of having them asigned by your order hierarchy which in most cases leaves you with different colors for the same things when you don't want to.

Not to mention that if I want to make a graph that includes both good and bad things I want to be able to color a part red and another green rather than being forced to whatever the color pallete assigns to it.

I understand that this might be either hard to implement or seem inappropiate for significant terms or top values break downs, but I think it should be easy to implement them when you use filters since the user has to define the bounds for that data by hand.

[ghudgins]

+1 https://discuss.elastic.co/t/customize-lenss-graphs/286702/6

[ghudgins]

+1 https://discuss.elastic.co/t/customize-lens-colors-in-kibana/288901/

[ghudgins]

related requirement in - #36544 - the ability to color terms after a split / group by

[kumarsudhish]

When this feature would be availble

[ghudgins]

+1 from @cyrille-leclerc @katefarrar @andreadelrio - we reviewed designs yesterday that would benefit from having this support. the use case is log level (debug / warn / error / info) being assigned specific colors

[scottfweintraub]

The inability to assign colors to values is generally a show stopper for me to leave aggregation visualizations and use lens, in a lot of cases. Similarly to log level, quickly differentiating other statuses that are good/bad requires useful coloring.

[drewdaemon]

Note: When this lands, it may make sense to reevaluate the usefulness of the "Sync color pallettes across panels" option at the dashboard level.

[Danouchka]

+1

[carlopuri]

+1
Very useful feature!

[stephenmcconnachie]

+1

[AxelPatron]

+1

[sektorcap]

+1

[LiorHen9]

+1

[markov00]

Please use the 👍 in the issue description and avoid +1 comments. This issue is currently a work in progress but we don't have an ETA jet, thank you for your collaboration

[Mauro-Rizzi]

I understand people writing +1 to bring this issue back to relevance since enough time has passed I changed jobs twice since this issue was brought up