The issue has been solved in 7.5.0.0, it is described in the topic ‘Unable to change the icon’s color’). With the standalone Windows app 7.6.0.0 it does not work. Drag and drop of a recolored image always copies the image in black color:
Hello! We have fixed the issue with recoloring. Please, try to update to a new version of the app (Pichon 8.2).