XD-DENG opened a new pull request #8742:
URL: https://github.com/apache/airflow/pull/8742


   Currently the color for each state is repeatedly appearing in the response 
payload of endpoints `/dag_stats` and `/task_stats`.
   
   This can be avoided by having the mapping between state and color in the 
static file, and map each state into different color at client side after 
client receives the necessary info, instead of passing duplicated color 
information in the response payload.
   
   This significantly reduces the size of data to be transferred from server to 
client.
   
   ---
   Make sure to mark the boxes below before creating PR: [x]
   
   - [x] Description above provides context of the change
   - [x] (inapplicable for this change?) Unit tests coverage for changes (not 
needed for documentation changes)
   - [x] Target Github ISSUE in description if exists
   - [x] Commits follow "[How to write a good git commit 
message](http://chris.beams.io/posts/git-commit/)"
   - [x] Relevant documentation is updated including usage instructions.
   - [x] I will engage committers as explained in [Contribution Workflow 
Example](https://github.com/apache/airflow/blob/master/CONTRIBUTING.rst#contribution-workflow-example).
   
   ---
   In case of fundamental code change, Airflow Improvement Proposal 
([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals))
 is needed.
   In case of a new dependency, check compliance with the [ASF 3rd Party 
License Policy](https://www.apache.org/legal/resolved.html#category-x).
   In case of backwards incompatible changes please leave a note in 
[UPDATING.md](https://github.com/apache/airflow/blob/master/UPDATING.md).
   Read the [Pull Request 
Guidelines](https://github.com/apache/airflow/blob/master/CONTRIBUTING.rst#pull-request-guidelines)
 for more information.
   


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