light probes change texture

Hello all,

I've placed light probes in my scene for illuminating a lot of small objects "products" on the shelves (disabled in the scene view at the picture), and it turns the shelves texture to grayish. Please see picture for reference: the light above is area light, and the "cooler" in the middle-right used to have a single white color.

Do you have any suggestion why this should happen? For better optimization would you suggest putting fewer probes?

Thanks.