What Does The Purple Ecstasy Pill Have In It?

It is difficult to say the exact content of the purple Ecstasy pill. This is because pills bought on the street can contain anything extra form Meth to Speed to Caffeine.
The purple pills however usually contain MDMA, LSD and/or amphetamines and are also known as ‘downers’ as they can make you feel relaxed and make you feel mellow rather than others that make you feel hyperactive. However, you can buy testing kits which can be used at home to test what is in a pill and can be very easy to use. You can buy these tests from sites such as; dancesafe.org 
But with all illegal drugs they can contain anything, especially if bought from the streets as they are not controlled substances so people cut them and mix them with anything, so with any type of illegal drug you can never truly know what is in them.
Ecstasy is one of the most widely used illegal drugs and is usually associated with being used at raves and parties around the world. But, if caught with this drug you can get anything from a fine to a short term jail sentence. Other names for ecstasy are: E, MDMA, X or XTC.

I hear that purple stars are cut with heroin

It makes absoulutely no difference of the color, the stamp on the pill, etc.  If you want to know wuts in it go to "Dance Safe.com" and buy a test kit. You obviously must be new to the game.
Peace

Honestly only the makers know whats in em

id ask the person you got em from though

colors really don't make a differnce though..ive gotten bomb blue pills and ive gotten bunk blue pills.

MDMA, which is the main ingredient in X. But X is cut with meth, heroin, and who knows what else