To see paint in your dream symbolises expression of your inner emotions. Consider the colour of the paint and how the colour makes your feel. It is this feeling that you need to express more in your waking life.
To mix paint in your dream suggests that you are incorporating a little variety in your life.
If you see or touch wet paint in your dream, then it implies that you are unsure about your feelings. It may also mean that whatever you are feeling is still very fresh or raw.