Pale yellow, with white trim.

I sent out 500 yellow letters in October to absentee owners using @Jerry Puckett, so a special thanks to him.

For example maybe have one phone number for post cards and a separate phone number for yellow letters.

I didn't even know you could sell your house that easily.Since the house was transferred with a quit claim deed, we were targeted with a yellow letter.

I get yellow letter green letters all manner of direct mail from wholesalers be it   Hey I see you just bought I have more... to hey you want to sell.. but mainly do you want to buy more..

Should I attract leads with yellow cards and wait for a call, or go and look for abandoned properties and try to find the owner of the property.

The vinyl siding (yellow or cream) will be staying, the roof will be replaced with a new architectural shingle...Asking for color ideas for stucco and any other inexpensive exterior dress up ideas..

Do direct mail to the area ( yellow letters).

IMO,  learn the yellow letter market, and get a pocket listing!. 

I'm not sure about the market where you live but Dallas is red hot and everyone and their dog is sending yellow letters.