A light-weight addon to help you track CDs for 2.4.3, seeks to emulate Omnibar.
Download the addon from https://github.com/Siggelicious/Cede.
Rename the folder from 'Cede-master' to 'Cede'.
Drag it into your ...\World of Warcraft\Interface\AddOns folder.
You can change the scale of the buttons aswell as the vertical offset by going into Interface > AddOns > Cede.
You can add or remove CDs with /cede <add, remove> <id> <cd>.
If you end up with green or broken icons it's likely because you have two IDs for the same spell.