Eclipse HTML editor , the background color is black ?

as shown.
changing the background color has no effect.
I do not know how to create it .
similar situation was encountered what ?
------ Solution ---------------------------------------- ----

enough to understand . . . Baidu should be able to search for . . .
------ Solution ---------------------------------------- ----
brother you look at the background of the property right , which can modify their own look .
------ Solution ---------------------------------------- ----
1 Floor truth
seemingly resolved

------ For reference only ---------------------------------- -----
that I set up , that is, the HTML , JSP are white.
Later I changed HTML editor , rather than directly open , no this black interface.
reason is unknown.