Just an idea.
Would be nice to have a constraint of this type.
- Select a slot
- Create a constraint by selecting a bone.
- Set start and end colors in the constraints properties
- Set the radius in the constraint properties
Now when you move the bone slot changes color depending on how far has bone moved regarding to original pose. if the distance equals Radius or more color sets to final. if bone is moved back to original pose color is back to starting value.
This can be very useful when we do several image transformations in the rig. Depending on the bone positions images will fadein and fadeout. which will create nice transition of several attachments without any animation.
In the image below with constraint if you move bone up and down along the black line those 3 images will show nice transition changing one into another depending where the bone is.
