Does spray paint adhere to electric tape?

Yes and no. Depends on the brand. I have used electrical tape as a paint mask on several metal projects. Hard acrylic paints usually crack and peal when I take it off. More flexable paints designed to paint plastics usually crack but still hold onto the tape. (If you are looking to use painted tape to add various colors to something you would do better to buy the tape in your desired color. It does come in more colors than just black.) If the tape isn't going to be moved after painting any paint that sayes it will work on plastic should be fine.