Paintbrush overlay question

[Ofnuts]

Can't reproduce either. Anyway, the tutorial has two major problems:

• The "fuzzy select" tpol doesn't behave properly on the edges of things
  
• "Overlay" does what you want only with some color combinations
  

See here for a tutorial to do the same thing, where:

• The background is properly removed with Color erase
  

• Things are painted over after set the alpha-lock on the layer.