Originally submitted to Google Code by bryan.oakley on 26 Mar 2010
The keyword colorizer still seems to cause serious performance issues. Open a complex test with lots of keywords (in my case, 45 lines). Open the plugin manager, then switch back and forth between that tab and the edit tab.
If I disable the colorizer the switch is nearly instantaneous. With the colorizer enabled it is measurably slower (on the order of a couple of seconds)