OG Madbone

Hello, I have iCue installed and all the 6 fans are connected with Lightning Node Pro. The fans have the rainbove wave profile and all goes well.I have iCue 3.7.99 installed. However, i want to change the brightness of the fans, but i can't find a way how to do this. I think it is a little too bright. Now with Corsair Link i could change this, but i prefer Corsair iCue to use. Can you help me to find a solution? Thanks! OG