hey there. you want to look at the ec3.css file in the root of the event-calendar plugin directory.
look for this css class around line 120.
.ec3_list {
margin-left:-12px;
word-spacing:-1px;
letter-spacing:-0.2px;
color:#800;
}
i agree, the css for this needs to be more assessable. maybe if this (and all css for this plugin) were added to the appearance settings in wordpress it would be easier for people to find.