my clients section connected on the homepage has an error with the gray scale function

the grayscale works perfectly in the grid style, but in the carousel style it presents the error in some clients the color is already active.

Additional I would like to deactivate the click on the images so that it does not redirect to any side. just leave the grayscale effect

Thanks Gregor, it worked for me the following way,

in the row where the clients are, I gave him an identification
example:

Row ID: clients

then to the client in the url clients option added:
www.test.com/#clients

for all customers and it works.
has grayscale
and when you click, it stays in the same place.

It would be better if the gray scale were activated without the need to add a url.

but for now my solution pleases me.

thanks, I worked the code is the one I was looking for