In the Santeria religion, what does wearing yellow and white beads represent?

In the Santeria religion, what does wearing yellow and white beads represent?

dead chicken heads

Yemanja
The Orisha of the Sea
and
The Orisha of Prosperity

I think It's oxen, Yemalla's daughter actually, her sacred color is yellow because she went through poverty and had only one dress which she washed in the river until it faded to yellow--it also means you've "made the saint"--the necklace to which you're referring is called an "Eleke"

White is Obatala and yellow is shun

It has to be Oshun (her color is yellow). It can't be Yemaya because her colors are blue and white which represent the sea.