I have a model whose file type is 3D Object that i imported into blender as an OBJ. In object mode it looks fine but in edit mode the wireframe has an odd blue and black checker pattern. Can i make it look like the default black?
In Edit Mode, Select all - A, press CTRL+E > Clear Sharp.
They are Marked Sharp and this is why it looks like this. It happens sometimes when importing .OBJ files or other formats.
You can also check Data tab > Geometry Data for Custom Normals, they can cause troubles but they can also be good. So if want to get rid of them choose Clear Custom Split Normals Data.