Ruban notified me on Twitter that he is now seeing the yellow ad label back in the Google search results near the AdWords ads. Google has done away with the yellow color for the ad label back June 2016 after switching to the green ad label.
Here is the before and after:
The old yellow ad label:
The new green ad label:
But now, Ruban sees the yellow label back.
Here is a screen shot but click on it to see the full size from what Ruban shared:
Forum discussion at Twitter.
Update: Google told us that the green ad label is sticking and this might be some lingering display from the move a few months ago.