Some import statements missing color syntax highlight

Hi,

Using IJ CE 13.1.1, Sometimes, there are some import statements which have no syntax highliting.In the code, the classes coming from these imports also suffer from the lack of syntax highlighting. Is it because of the java lib itself or does IJ has some rules regarding syntax highlighting which leave out these classes?

Thanks in advance for any help.

EDIT: Is there a way to place an inline image in the post? If so can you please show me how? Thanks.