We're using the v4 version of the player with the standard skin:
When a video is paused, it blurs the screen and darkens. Can this be customised or removed?
Player V4 provides a default CSS file with detailed settings that define the Player V4 user interface.
In particular, blur effect on the pause screen is adjustable using the following class
.oo-player-container .oo-blur class
You might be interested in reviewing the following page Customizing the Player V4 Appearance Using CSS
Please let us know you have any questions!