Wooden Drone
So here the files for the Hipster Dark Theme as portrayed below;

1.

In your /houdiniX.X/folder
Paste the files contained in "Zen_HipsterDark_Theme.zip" in your Houdini config folder (don't forget to backup the old ones),
Paste the file contained in "Zen_Desktop.zip" in your Houdini desktop folder.

2.

Be hipster

goldleaf
The Asset Reference node is just a convenient wrapper around the vanilla Reference, Set Variant, and Transform LOPs. Often when referencing assets, you want to position them and/or make variant selections. This saves you from having to create multiple nodes to do these tasks.

eikonoklastes
Check the below post, but please also RFE for this. This should be built into Houdini (with a better implementation than mine, obviously):

https://www.sidefx.com/forum/topic/7088/#post-374564 [www.sidefx.com]

BryanRay
I don't think there's a way to do that, no. Like most warnings, its purpose is to alert you that there's something wonky. If it's annoying you, then I think the right move would be to fix the shaders, not to disable the warning.

BryanRay
Do you have anything plugged into the Displacement shader? The warning is telling you that the shader isn't doing anything, so it's being skipped for efficiency purposes. A Karma MtlX Subnet automatically creates a MtlX Displacement node and connects it to displacement_output. If you leave it in the network but don't actually use it, then you'll get this warning.