I had a wild old man call me one time when I first started sending out yellow letters asking me why I wanted to buy his house when I live in a perfectly fine house.  

Jacksonville has a great real estate Facebook page called Yellow Bird Connect.

Plus a nice green carpet with little yellow flowers.  

@Frederic BabeuxOn citrus anywhere in the world, make sure you understand "Greening".Same thought on Coconuts, understand "Yellowing".Anyone on Belize, don't invest there unless you have made many trips there and either have an onsite Caretaker or a gated Condo community.

Bay Park / Clairemont / Carlsbad / Oceanside are all top-tier markets that fetch top dollar (see the Yellow & Red).Move your search slightly inland, or further down South and inland, in order to get something done for 1/2 the price, with similar rents (not quite as high, but definitely not 50% less like the purchase price would be)

yellow walls don't really work in this city" or "actually, there's a bottomless pit in the front lawn that is putting people off".

Hahaha right you should've see the pink and yellow tile!

Some may give you owners address if different from the property, some may integrate with post card and yellow letter mailings. 

If anything you've maybe done it a bit too good as I have yellow-flags I'd sort through on DD side of things. 

Let's say you accidentally use bleach on your nice white sheets and all the body oils get bonded to the fabric and are yellowing.