How to adjust settings to where a brush changes in value?

back in the early days of Corel Painter i had 2 brushes; (a loooong time ago)

one, with continuous use with the same stroke, the color would get lighter in value. Same hue, just lighter. Eventually, if you kept working the same stroke it would eventually turn white.

There was another brush that did the opposite, the more you worked the brush in the same stroke, it would get darker.

See the attached.  I only used one blue hue, but was able to create the lighter and darker areas by just continuing to work the brush.

I am now back in the Painter game - those brushes are long gone.

For the experts:  what settings could i use to emulate this same behavior?

thx in advance!