Freestyle colors not coming up

Could anyone help me with Freestyle?

Basically I have a scene I am trying to render (with freestyle) to make it look like a cartoon scene, but when I render it, I only get the lines but not the colors. What am I doing wrong? I have tried it with Cycles and Eevee, but none have worked !
Thanks in advance!

Blender version: 2.8.4

Ps…: I know the wall texture looks odd, but I am yet to correct it.