There is another “Ad” label that Google is testing (first was a green “ad” label that was found in the UK and Germany), and this time, it’s a purple “Ad” label found in Maps that matches the purple pin noting the location of the advertiser on the map itself. This particular pin distinguishes it form the red organic pins.
This change on Map searches was noticed by Ross at Paid Insights on mobile and desktop in the Denver area.
— Ross @ Paid Insights (@paidinsights) April 23, 2016
It isn’t currently known how long this test has been running. According to Ginny Marvin, she’s seen the purple label in Maps on both desktop and Android, but hasn’t seen them on iOS. With the green labels test coming out last week, these different colored labels appear to be running in a number of major markets at this point.