How to import Roblox characters into Blender 2.90 with color

Hey everyone! Today I was trying to make a GFX, but I realized that Blender had an update, to Blender 2.90, I can import my character and all, but (this isn’t new) when I import it, the character turns white.
In Blender 2.8, the fix was simple, Ambient occlusion and Textured solid, but now I have absolutely no idea where those are and how to fix it!

What can I do?

Try reading this tutorial, make sure you read the whole thing.

This was helpful, but I still do not know how to do that in Blender 2.90, I have no idea where these buttons are…

I tried making gfx for myself with blender 2.90 (I got a new laptop and in my old computer had blender 2.71). So my problem is I downloaded the rig but when I put the textures in (the colors of my character) they dont seem to work? It’s all messy and mixed up.

Hey, did you solved that? The same are happening with me, idk what to do…