Fast way to change color for group of clusters in Gephi

[avitominoz]

After running the cluster algorithm I prefer to set the colors of my own choice. And I want to highlight only most important clusters. In Partitionig -> Nodes -> Clustering (Chinese Whispers) is a convenient option "All Blacks". But I'm using a black background. Maybe somebody knows where change (in config files or something like that, I don't know exactly) that all nodes will become whites after pressing "All Blacks"? Thank you!