In testing #173 I found this issue against 2.x
The colour contrast of text directly over the bar charts is not sufficent - I'm not able to read the numbers.
The chart is one chunk of code in the DOM so it's not easy to inspect and find the problem.
To reproduce: Install demo content and visit:
/election/general-election-july-2024/banbury
/election/general-election-july-2024
Screenshot:
