Starch and Glue turned Blue

This is a picture of me working with my starch and glue after i added blue food coloring. The starch and glue is supposed to mix together and form a putty substance mine however turned into a runny goo that stuck to my fingers. I do not know if it was the food coloring or not that turned it into the goo but I do know that before I added the food coloring my starch and glue made a putty substance that did not stick to my fingers. After my putty turned to goo I added some more starch to see what would happen. It ended up taking the goo off my fingers and turning it into somewhat of a putty but still a runny putty instead of a runny goo.