I don't really mind what it looks like, but I love this idea of a visual cue that someone is actually still absorbing mana. This is perfect for raid environments and such where you may not know the mana status of everyone. If you have the visual cue shut off when you are fully saturated with mana, that will allow others to tell, at a glance, if anyone in their raid or group is still absorbing mana from their surroundings. Furthermore, you could alter the intensity of the cue either by the meditation skill level of the user or the perception skill level of the observer, as well as the saturation of the particular color of mana. Yes, I just brought colored mana into this!