My illustrator file black strokes are grey as a PDF. How do I change them to pure black?

[jneydew14040192]

My drawing is in color, but the black strokes come out as grey. This is the jpeg one so you can see how its suppose to look.This is an assignment due tomorrow so can anyone please save me ASAP?!

[Sebastian Bleak]

Hi, would you be able to provide us with a screen shot of your entire screen? Sometimes that helps us find the issue. Also would you be able to point out the lines that are supposed to be black? Thank you!

[Monika Gause]

Can you check with the print preview in Acrobat if they just look grey or if they are grey? The color values would be important.

[ceyhun_akgun]

Do you check Fime / Document Setup?

Here, it is possible to give color to the background. Must be white. If you have given color, the screen may appear in this way.