Table conditional formating

Hi all,

I need some help with the conditional formatting:

I have this Data set:

And I performed conditional formating when some integer from the Blue color col is appear and I got this table:

Now I would like to add additional conditional formatting that all what come before the blue color will be fill with grey color like in the picture below:

There is possible? if not there is another way beside conditional formatting to perform this?

Thanks a lot!