What colour is yak's milk and why ?
969008
Pink, They bleed inside the udder !
1025769
White.  You're at the South Pole.\n\nYawn.
1040008
Yes... Dove, Pigeon, Flamingos and Penguins produce a “crop milk” (pigeons milk) due to the action of a hormone called prolactin. Both sexes produce this highly nutritious substance to feed to the young.\n\nCrop milk bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
967391
Oh come on! You say tomato, I say tomato!  There is one universal language-Love! I also love the colour blue. It is my favourite colour.
167587
The main color of the martian soil is due to the presence of limonite, a mixture of hydrated iron oxide minerals like geothite (FeO(OH)). It might also contain some red hematite Fe2O3, which is the main ingredient of rust on earth. The soil might also contain about 1% magnetite, Fe3O4. \n\n\nThere appears to be some substantial grey hematite deposits on Mars. The Mars Surveyer saw evidence of it using infrared imaging in 1998 at the Martian equator, near a place called  Sinus Meridian. It is like the red hematite we know here on earth except it has a different crystal structure. It is interesting because it strongly suggests the existence at one time of water on Mars. \n\nLimonite:\n\nAny of a group of widely occurring yellowish-brown to black iron oxide minerals, essentially FeO(OH)·nH2O, used as a minor ore of iron.\n\nHematite:\n\nA black or blackish-red to brick-red mineral, essentially Fe2O3, the chief ore of iron.\n\nMagnetite:\n\nThe mineral form of black iron oxide, Fe3O4.
517146
May be because thursday is related with yellow colour. This colour is related with puja to Vishnu.\n\nI am not sure either. But Termric boiled in milk tastes fine and is good for health. Hindusism has incorporated many healthy habits in religius practice. Many revered tree are just grand ma's medicene. Yellow milk is not drunk by all hindus. At the most it is a custom in Maharashtra or in the family of your friend.\n\nI am a Hindu and only time I was given termeric milk to drink was after an accident and I was hurt. It has healing features. Many people drink it just for healty life.
303936
In a way, blood is "blue" before it's exposed to oxygen. Before the hemaglobin in blood picks up oxygen molecules, the blood is a dark purple color. When the hemaglobin (a protein molecule containing an iron complex called "heme") picks up the oxygen, it turns from dark gray-purple to bright red.\n\nThe unoxygenated color lends a bluish-purple tone to lips when you are "cyanotic" or blue due to lack of oxygen. It's not a true blue like the sky, but it's a dark bluish purple.
417060
Probably white.  But, double check that a pearl is even a mineral - I don't remember that, but it's been a while
116911
hot pink\nheliotrope (kind of a weird pinkish purple)
632188
Since a glass of milk contains water in it, i would say water.
980581
Brown or black, unless you live in alaska, then it's white
522216
Food colouring and bleach.
354860
You mentioned pink, brown, and satanic black.\n\nI think you are talking about nipples.\n\nI like blue by the way
791078
I suppose the answer is ultaviolet but as it is outside the visual spectrum of elctromagnetic radiation I can't see how you could define it as a coloUr.
703607
tanish orangish color
855384
Actually it's more of a pink than red.  And it's not always red.\n\nThe red comes from all the dust suspended in the atmosphere, which comes from the severe dusts storms that are common on Mars.  The Martian "soil" is red, so when a lot of that "soil" or dust is in the air, that makes the sky look pink.  The soil is red because there's a lot of a rust-like compound in it.\n\nIf all the dust settles out of the sky, then the sky would be a pale blue color.  Blue for the same reason Earth's sky is blue.  Pale because the Martian atmosphere is very very thin.
146680
Cows aren't paint. They dont take the grass in and mix it up to produce milk and butter. Those things are produced by their body. The color of things is determined by what material makes it up and what "state" it's in. If something "clear" like an oxygen atom, combines with something that's a gray color like an iron atom, it produces a new thing with a new color called rust. \n\nMilk and butter are far more complex atoms than iron and oxygen. So they reflect the color of what they are. \n\nI would say your grandpa is a pretty funny guy. Tell him hello from OiVey.