Reading Rainbow colors to outlines only?

[Dezcom]

When Glyphs is in Drawing Mode, the shapes are filled with many colors, especially on a disjointed font like I am designing now. I know I can make them all solid Black but can I make a view which just shows outlines with no color fill? The colors can be distracting sometimes. Here is a screenshot from the font in question:

[AndreasChlupka]

Hi, is Show Master Compatibility on or off?

[Dezcom]

Thanks, Andreas! That was it! What is it for? I mean the colors.

[mekkablue (Rainer Erich Scheichelbauer)]

They indicate the shape order.

[GeorgSeifert]

This reporter helps understanding the (missing) compatibility between different masters.