I loaded a file and the 3d model is white. I looked at different hoping to find a preset that will give the model color but I couldn't find it.
I then went to UV/editing to put an image in, but there was no color either.
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Sign up to join this communityIt looks like you haven't added a material to your model. You need to add a material, create an image texture node referencing your texture, and connect it to the base_color of the Principled BSDF that appears.
The material can be added by clicking on the +New button above the shader editor (while the mesh is selected), or in the materials tab of the properties panel (on the right, its icon looks like a checkered sphere). You can add the image texture node by pressing shift-a and choosing texture>image texture.
If you want a shadeless texture in EEVEE, use the Emission BSDF node from the shift-a>shader menu.
Image textures needs UV Unwrapped Object.
You have to UV unwrap it first!
Select the object an switch to Edit Mode
.
Press U and unwrap it!
Now you have to adjust faces in UV Editor for desired result.
For more about UV Mapping refer this, this or this
UV Mapping only works in Edit Mode