ColorfulBulletins cydia tweak adds the ability to change both color and transparency of the bulletin list on the lockscreen, so lockbar and dateview will no longer look differently from the notification items sitting between them. You can use predefined, standard iOS colors, as well as custom color codes, which can be easily applied.
Also it is integrated into WinterBoard to make it possible for designers to add the color that fits best with their lockscreen: Bulletin colors are represented by a string with the key “CBBulletinColor” in a Info.plist in the root folder of the theme. The required format is red;green;blue;alpha, possible color values are from 0-255 and alpha values go from 0-100. Example: 0;150;255;60 for a nice blue with default opacity.
Configure options from Settings.