Color mixup

[colin]

Here is an older post that could well be the same issue. See if the solution works for your dad:

Incorrectly displayed colors in the workspace

When I open the model templet (it doesn’t matter which one I will choose) shows in the workspace wrong colors. When I use “Sample paint” tool in the material panel it seams to be correct color but on the model is displayed incorret [kolor skóry lisanne] look on the Lisanne skin. I tried to reset workspace, change style, change colors, re-instal the program, nothing yet work. Anyone have idea what to do?