The spores give the mold the color you see. When airborne, the spores spread the mold from place to place like dandelion seed. In dandergous molds, the mycotoxins are often contained in and around these threads. In some cases, the toxins may have spread throughout the food. While most molds prefer warmer temperatures, they can grow in the colder range.
Molds also tolerate salt and sugar better than most other food invaders.
And Kitchen Cleanliness is vital in controlling mold. Mold spores from affected food can build up in your refrigerator, shortening the life of other foods. Clean the inside of the refrigerator every few months with 1 tbsp. Rinse with clear water and dry. Keep disrags, dish cloths, sponges and mops clean and fresh.