Sorry if I missed it in the memories.

I use PSP9, and as much as I try, I don't know how to get the kind of effect found in this icon here by misty_darkness.



I know it has something to do with either greyscale or masking, but I'm not sure how to get only the one thing (like the gold puzzle in the middle) colored like that. If I missed something like this in the memories, you can gladly tell me. I'd like some help with how to get the grey and coloring like this.

Thanks!