Hi @buckerooni ,
With the parametric mask, you can select not only the areas of brightness, but also the color channels, hue and saturation.
In this case - I used curves here - reduction of green and yellow has improved the mask a lot:
You should also play with feathering radius, mask blur and mask contrast to make the mask even more precise:
At the end you need additional inverted drawn mask only for the pillow:
Result:
