I spend some time customizing the colors for syntax highlighting in Eclipse (Java, JSP, HTML, CSS, etc.) but whenever I try to export these settings via File|Export|General|
I would export the preference before modifying the color, and then after.
That way, you would be able to isolate the specific rules of an eclipse preference file into one smaller file and:
That kind of strategy can be further refined into several small settings files (one for Java, one for JSP, HTML, CSS, ...), in order to better analyzing the potential side-effects when re-importing those settings.