Left Toolbar > Math Nodes >
Rgbo Add
The RGBO Add node allows to add rgbo values. RGBO output: Red Green Blue Opacity.
On the left toolbar choose Point Nodes > Rgbo Add
Drag the Rgbo Add icon into the Node Graph.
Connect the Output .
rgbo_a A RGBO type.
rgbo_b A RGBO type.
rgbo 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
rgbo A
rgbo B