I used to thought I had synesthesia until I watch a video about it, a woman said that she can't see when there is loud music playing because the sound invades all her vision, althought I assosiate colors to music they don't invade my vision, they are in another layer(they are mental visualizations). I also can feel the taste of something when I watch it or 'touch' with the eyes but I supose I just have a vivid sensory memory.
no, feeling colours and seeing them in your mind's eye is still synaesthesia.