black or white only brushes

[Dcwhited]

Greetings

I just created a few new cool pixel brushes for Affinity Designer. However when i tried them out I can't change the color. if i create a brush with a black .png it only brushes in black. If i load a whited .png  it only paints white.

Can someone educate me on what i am doing wrong? 

Thanks 

Dave

 

 

[firstdefence]

You are likely using image brushes, try creating a textured intensity brush. So create a black background like a black rectangle and draw a white shape over it, and export. like this.

[Dcwhited]

Thank you so much. That was exactly what i was doing wrong. they are working now.