I downloaded a gltf and imported it into cesium. It is laying directly on the ocean and our ocean floor is very dark as we are using blue marble imagery. Here is a link to the gltf.
The gltf appears brightly colored when you view in sketchfab but appears very dark when imported into cesium
We are using an older version of cesium as well (1.68)
Will any properties of ModelGraphics help me out with lighting? I have shadows disabled and the lighting in the viewer turned off. Will a cesium update solve this problem?