Use theme to define opacity

[Its-Just-Nans]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

Use the theme to set a custom opacity

What is the current behavior?

We cannot change the opacity

Issue Number: N/A

What is the new behavior?

We can change the opacity

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[amcdnl]

Looks good overall. Can you update those variables names?

[Its-Just-Nans]

Yes I have updated names :
25a8d83

[amcdnl]

published 3.0.2