[Annotation plugin] Add colorInt API for annotation options

[Chaoba]

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Fixes: < Link to related issues that will be fixed by this pull request, if they exist >

Pull request checklist:

• Briefly describe the changes in this PR.
• Include before/after visuals or gifs if this PR includes visual changes.
• Write tests for all new functionality. If tests were not written, please explain why.
• Add example if relevant.
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Summary of changes

This pr add convenient colorInt API for annotation options to enable users use colorInt to set annotation color while creating annotations.

User impact (optional)