What is the slight pink color on white canned beans? I am concerned they may have spoiled and I should not use them.
As outlined in the accepted answer of this Seasoned Advice question (Are these worms in my black eyed peas/beans?):
Beans and related plants have an embryo in their seeds. In white legumes, the embryo is a light pink color and looks indeed like a larva.
That's likely what you're seeing. I know I've used white beans that were pink-ish before, and nothing bad has ever happened (though I'm hardly an authoritative source). Biggest thing to check for in canned beans, as far as I know, is whether the can itself is swollen at all, and whether the beans/juice have an unusual smell.