Besides the famously pink yak's milk is the milk of any other mammals not white?

Could be the mother's milk of Sara Dallin, Keren Woodward and Siobhan Fahey as I often wondered why they were called Bananarama

Echidna milk actually changes colour. When lactation first starts it is very thin and white. As lactation continues it turns pink because of it being very high in iron, and then later in lactation the milk is so thick it is almost like the thickest cream and you cannot even get it up in a pipette.

https://en.wikipedia.org/wiki/Short-beaked_echidna

The following site, aimed at answering children's questions, has an informative feature called "Ask The Farmer", and states that Guernsey cows yield a "very yellow" milk.

[cce.cornell.edu/suffolk/Kids/JFKmike.htm] Link no longer exists
https://en.wikipedia.org/wiki/Guernsey_cattle#Milk

It also tackles controversial agricultural questions such as "What is the difference between a hen and a chicken?" and "I like pigs - do you?".

Hippos also produce milk, while the pink colour in yak's is due to the presence of (ech) blood. http://factslist.net/2013/01/why-hippos-milk-is-pink-10-random-facts-about-hippos/