{"action":"created","issue":{"url":"https://api.github.com/repos/Yalantis/Koloda/issues/150","repository_url":"https://api.github.com/repos/Yalantis/Koloda","labels_url":"https://api.github.com/repos/Yalantis/Koloda/issues/150/labels{/name}","comments_url":"https://api.github.com/repos/Yalantis/Koloda/issues/150/comments","events_url":"https://api.github.com/repos/Yalantis/Koloda/issues/150/events","html_url":"https://github.com/Yalantis/Koloda/pull/150","id":155441119,"number":150,"title":"Overlay's alpha modification","user":{"login":"tomekh7","id":5720644,"avatar_url":"https://avatars.githubusercontent.com/u/5720644?v=3","gravatar_id":"","url":"https://api.github.com/users/tomekh7","html_url":"https://github.com/tomekh7","followers_url":"https://api.github.com/users/tomekh7/followers","following_url":"https://api.github.com/users/tomekh7/following{/other_user}","gists_url":"https://api.github.com/users/tomekh7/gists{/gist_id}","starred_url":"https://api.github.com/users/tomekh7/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tomekh7/subscriptions","organizations_url":"https://api.github.com/users/tomekh7/orgs","repos_url":"https://api.github.com/users/tomekh7/repos","events_url":"https://api.github.com/users/tomekh7/events{/privacy}","received_events_url":"https://api.github.com/users/tomekh7/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2016-05-18T08:12:59Z","updated_at":"2016-05-18T16:19:31Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/Yalantis/Koloda/pulls/150","html_url":"https://github.com/Yalantis/Koloda/pull/150","diff_url":"https://github.com/Yalantis/Koloda/pull/150.diff","patch_url":"https://github.com/Yalantis/Koloda/pull/150.patch"},"body":"Add delegate method to get multiplier, that can speed up or slow down overlay's alpha change during swipe."},"comment":{"url":"https://api.github.com/repos/Yalantis/Koloda/issues/comments/220079878","html_url":"https://github.com/Yalantis/Koloda/pull/150#issuecomment-220079878","issue_url":"https://api.github.com/repos/Yalantis/Koloda/issues/150","id":220079878,"user":{"login":"AEugene","id":8107146,"avatar_url":"https://avatars.githubusercontent.com/u/8107146?v=3","gravatar_id":"","url":"https://api.github.com/users/AEugene","html_url":"https://github.com/AEugene","followers_url":"https://api.github.com/users/AEugene/followers","following_url":"https://api.github.com/users/AEugene/following{/other_user}","gists_url":"https://api.github.com/users/AEugene/gists{/gist_id}","starred_url":"https://api.github.com/users/AEugene/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AEugene/subscriptions","organizations_url":"https://api.github.com/users/AEugene/orgs","repos_url":"https://api.github.com/users/AEugene/repos","events_url":"https://api.github.com/users/AEugene/events{/privacy}","received_events_url":"https://api.github.com/users/AEugene/received_events","type":"User","site_admin":false},"created_at":"2016-05-18T16:19:31Z","updated_at":"2016-05-18T16:19:31Z","body":"hi @tomekh7 , I think it should be implemented as function of finish percentage. Could it be something like this.\r\n```swift\r\ntypealias OverlayAlphaDecorator = CGFloat -> CGFloat\r\n\r\nfunc koloda(koloda: KolodaView, overlayStrengthMultiplierForCardAtIndex index: UInt) ->  AlphaDecorator {\r\n    return { finishPercentage in\r\n         return finishPercentage * 2\r\n    }\r\n}\r\n`\r\n\r\nor maybe move alpha adjustment to OverlayView. I prefer second option."}}