Loganberry and blackberry.
According to the Encyclopedia Britannica Rudolph Boysen actually crossed three berries for the boysenberry. Loganberry, red raspberry, and blackberry.
at Christmas
Rudolph Evans in 1941
Robert L. May in 1939
Used different mixes of berries and other items to create paint
Rudolph the Red Nose Reindeer
Cavemen found lots of different ways to create artwork. They painted on walls and pieces of stone by using things such as berries that when smashed created different colors.
Pokeblock's are not in diamond instead there called poffin's, just like ruby, sapphire and emerald in the Pokemon contests you can create your own poffin using berries.
Rudolph the Red-Nosed Reindeer was created by Robert L. May in 1939. May worked for a company called Montgomery Ward that distributed coloring books in department stores every Christmas. As a way to save money, they decided to make their own original story booklets, for which May was asked to create. He went through different names, such as Rollo and Reginald, before settling on Rudolph. His brother-in-law, Johnny Marks, would later create the popular song. It has been noted that the story is quite different from the song and movies. For instance, Rudolph was not originally one of Santa's reindeer. He was just a regular reindeer (besides his nose, of course) living with his parents in a loving home. Santa found him while out delivering presents on a foggy Christmas Eve night.
Normally you can create pigments with almost anything. From rocks and soil, to deep rich colored berries such as cranberries or blueberries. Ancient Egyptians used to use crushed beetles for black color on the eyes.
Inks can come from oak bark which will create black, brown or even red colored inks. Blueberries or any other kind of berries can also be a good source of ink.
Montgomery wards was giving away coloring books for Christmas every year. They had been buying them, but decided it would be cheaper to create their own book. He was the work of Robert L May in a 1939 booklet . Rudolph was suppose to be a moose, but was changed to a reindeer. In the first year of publishing the store gave away 2.5 million copies. The story is owned by the Rudolp Company.
It helps to soften the blackberries and it is a contribution to the entire pie. The best thing I have found in my own experience is to take your berries and slice them in half then create a caramelized 'sauce' from added sugar for taste and consistency. To caramelize you would take your sliced berries and put them in a shallow sauce pan adding sugar to thicken the juice and flavor from the berries. Make sure you put it on the lowest setting possible for heat as to not scold the berries nor sauce. Hope it helps. If all else fails, a good can of pie filling is a safe fail system :)