The color of the snake in the dream is not necessarily significant unless the dreamer has a particular attraction or aversion to the color purple. Snakes can have several different, even contradictory meanings. In Western Culture, snakes generally represent evil, betrayal or dishonesty, in which case the dream could represent the dreamer's anticipation of trouble, particularly betrayal. However, the snake can also symbolize healing and regeneration as seen in the medical symbol of a snake twined around a staff. Other details of the dream as well as the emotional tone of the dream should signal whether it has positive or negative meaning to the dreamer.
The snake in this dream is a large problem with which the dreamer is struggling in real life.
Nothing
A "red snake" would have different significance to different dreamers. The meaning of the dream depends on the tone and feeling of the dream.
The snake is representing someone that you know in the real world.
From my own understanding, snake means someone doesnt like you.
See a psychologist.
In this particular dream, the snake probably is a symbol for something untrustworthy or repulsive. Seeing the ex-boyfriend with the snake, it suggests that those feelings are associated with him as well.
If that is what you have dreamed, don't worry about it. I can assure you, DON'T WORRY! nothing should happen.
your future is goth
From my understanding it means, that somebody hates you.
It probably means that you have an interest in gambling.
Without additional information about the setting and actions in the dream, it is impossible to give a reliable interpretation. In general, a hairy snake of any color is most likely a phallic symbol.