Finally, if you know what you’re doing, there’s a fourth way of controlling color with the Sturdy node group, without resourcing to Sturdy+: you may directly edit the underlying main ColorRamp by accessing it through the Sturdy Palette node group.

Keep reading for the ins and outs and the limitations of this method.

INSTRUCTIONS
1. Be sure you are using a material based on the Sturdy node group.

2. Add a Sturdy Palette node group to the material, but don’t connect it to anything.

3. With the Sturdy Palette node group select, press the TAB key to enter it.

4. BOOM: Edit the main ColorRamp as you will.

5. By far, the coolest (and wildest) way of editing a ColorRamp is the Eyedropper drag method:

Press the drop-down menu on the ColorRamp node, choose the Eyedropper, then drag it across anywhere in the Blender interface (for instance, over an image you have open in the Image Editor). If you want classic color mapping, start by dragging over dark colors and finish dragging over bright ones.

WARNINGS

• The provided Sturdy Palette is just great! Who doesn’t like color mapping that goes from cool blue green shadows to mid-tone peaches to warm yellow highlights? I sure do! By editing the main palette you will be disrupting that mystical balance. Keep your backups at hand!
• If your scene features more than one material based on the Sturdy node group, editing the underlying main palette will change color balance and color expression for all the related materials.
  This limitation doesn’t exist if you use the Sturdy+ node group. Sturdy+ will let you create several materials, each with its customized palette