Left Toolbar > Math Nodes > Rgbo Multiply
The RGBO Multiply node allows to multiply the components of the Rgbo value by a number. The checkboxes allow you to select to which components the multiplication is applied to.
On the left toolbar choose Point Nodes > Rgbo Multiply
Drag the Rgbo Multiply icon into the Node Graph.
Connect the Output .
rgbo_a A RGBO type.
rgbo_b A RGBO type.
result A RGBO type.
These attributes are exposed as input by default. Right-click the Node to hide the attribute as input and set the point values manually. Default R:0.0, G:0.0, B:0.0, O:1.0