Paint color not appearing at certain angles

I’ve painted the face of two closed loops.
The colors appear at some angles but not at others.
The two screen shots posted here are of the same model only different angles.
What am I missing?

They look like rather light colors. Normally SketchUp shades faces as if light was coming from the camera and that will tend to wash out lighter colors. Do you have Use Sun for Shading turned on? Share the .skp file so we can see what you’ve got.

Yep, that was it.
I toggled Shadows and voila, the colors appeared.
Thank you.