Cesium world much darker than imported Reality Capture scan

I have a project using Cesium and I imported a Reality Capture property scan I have set just above the proper location in the Cesium world. My scanned mesh is much brighter and over exposed relative to the Cesium background. What is the best way to try to match the brightness level of the cesium world and my property scan mesh?
If I am going to be importing other objects would it make sense to try to raise the brightness of the Cesium world to try to match my imported mesh so other imported meshes will be correct? If so how do I do that?

Here is a pic to show how different the illumination is on the scan vs Cesium world.
I am currently uploading the mesh into Ceisum to try placing it there as I haven’t done that yet but I would still like to know why an imported mesh is so over illuminated compared to the world.

I’ll show you a trick. I hope it helps you

tileset.style = new Cesium.Cesium3DTileStyle({
    color : 'rgba(200, 200, 200, 1)',

About 3DTiles style. see below url

This is what it looks like when applied to my 3dtiles(top-original, bottom-apply style)

This is a bit of a trick, so it’s not a fundamental solution.
A better solution would be to underexpose the photo with a photo retouching program before processing it in Reality Capture.