Update _variables.scss

css/_variables.scss

 $inputLightBackground: #EBEBEB;
 
 // Video layout.
-$videoThumbnailHovered: #BFEBFF;
+$videoThumbnailHovered: rgba(22, 94, 204, .4);
 $videoThumbnailSelected: #165ECC;
 $participantNameColor: #fff;
 $thumbnailPictogramColor: #fff;
  */
 $inputBg: $inputSemiBackground;
 $inputBgHover: $inputSemiBackground;
-$inputFontColor: $defaultDarkFontColor;
+$inputFontColor: $defaultDarkFontColor;