well i not know about lua or api to do addons, that i ask for this addon. some ppl know about the wow's archud. http://wow.curse.com/downloads/wow-addons/details/arc-hud2.aspx
To the ppl that dont know about this addon that put 2 arcs around your character, these arcs show your and your target Healt, Mana/energy, casting bars, your pet healt and energy, bufs and debufs, level, class, flag of war, and if is the allods case your CA for warrior, Barriers of paladins, etc. (like the rogue's target combo points of wow).
Maybe this addond can be maked, pliss tellme if is it posible to do for allods, that really help to get focus in battle.