Hi bentraje,
Not by default. (Except with Hardware OpenGL, Picture Viewer)
I hope I understand your question correctly: You have assigned a Texture Tag, holding a Material to object. But you would like to render just the Display Color set to Layer.
The first option would be to have all Texture Tags selected and place then something (e.g., the Letter X) into the Texture Tag Selection Field. Assuming you have no selection with the name X.
This switches all Materials to off. If you have a Selection Object created for all Texture Tags, this can be done with a view clicks, even for large scenes. This is the only practical way I can see right now.
Note that the Selection object doesn’t work with only tags, it needs one Object as well to create a Selection object. This required object can be just a Null, which gets then deleted from the list afterward, to keep only the tags.
A common suggestion might be to place the MoGraph Color Shader into a channel, and it gives you the Display Color. However, that is not passing the Layer’s Color through. It works only with the direct set color for that. Perhaps someone has written a script for that to sync the Display color to the Layer Color. You can do that with Xpresso, but it is a one object per set up, and no copy and paste nor iterate options.
The Sketch ‘n’ Toons has an option for Surface, but it is kind of tricky.
I have searched if there is any shader or plugin that can do the trick, but I couldn’t find one.
All the best