I did only a little toning to the original color scheme to resemble the box art.
Sculpted a new staff from a yellow plastic stick.
Not much work but a very pleasant result.
I will change the Mer-Man feet I don´t like the result, you are right it looks like dirt...
About dry-brushing... I don´t like to do it in vintage toys, only plain colors, that keep them very basic like they were originally
Many thanks for your review and advises, I liked them very much