Some components randomly display lighter white tinge colour

I have a project that has 3 square ceiling sections with chandelier in, the ceiling sections are a component in sketchup, for some reason 1 of the 3 shows lighter almost grey white tinge to it so when I put same light into 3 x chandeliers that one shows lighter and looks off, under these I have chair formations of say 20 chairs which are also a component, these are repeated twice so I have 40 chairs but the right set of chairs have the same light grey white tinge to them, on both counts I have to delete the component group in the right side pane in TM and copy and flip the ones that display ok to get back to how I made it in sketchup. Is this some kind of bug or something where some component instances randomly display lighter…should I use components less in my projects ? … Thanks if anyone can help, I would post screenshot but deleted that items that were causing problems.

look for reverse faces before importing

hope this help

If it was faces it would be a problem in all instances of the component?.. I have 3 instances of the component 2 display fine but one has the problem but they are all the same component?

select the object go to modeling select single face then select all inverted face and pus flip normals

hope this help

if don’t please send me only this model to understand what you need (skp model not the tm)