/me chat colour is very difficult to read and inaccessible

[madrxx]

The purple colour used in Essentials' /me command is very dark and difficult to read, and according to the server owner not configurable (if it is somehow, a better default should still be set).

[pop4959]

This is configurable via a custom message file. You can learn how to set that up here. For the message in your screenshot take a look at changing action.