Is your feature request related to a problem? Please describe.

even without my target
I want is alpha value to be low like other target.
I also want to adjust the alpha value.

Where should I change the code?

Describe the solution you'd like

This issue has been automatically marked as stale because it has not had recent activity. Maybe issue creator has abandoned it, or developer just don't want to implement suggested feature. Issue will be closed if no further activity occurs. Thank you for your contributions.