The pills are pressed by a stamping machine. The colour comes from food dyes and the mixers/binders. The stamp is usually basic - a company logo, letters, miscrosoft clipart pictures, a basic mass produced symbol etc.
People up at the big end of the chain don't give a fuck what press/colour it is - if it is a good pill, that is strong MDMA - they will sell out, and that is what they want.
If you choose to buy every HQ for the next 50 years because they were good, and refuse to buy every ? mark because they were bad - without even testing - then it speaks for itself.
As for the process (i'm guessing this..
i am in no way connected with the manufacture or supply of narcotics, this is an educated guess into the operations of a drug production ring )
Lets assume the pill is australian made (this may or may not happen):
1. Import powder from Amsterdam. Say you import 1kg, that gives you 10,000 pills of 100mg each.
2. Mix in powder 1:2 with binders, colours and other fillers (eg a pill = 300mg)
3. Pour powder through pill pressing machine, which stamps the pills with a pre-chosen logo etched into the stamp and bakes them into shape at high temperature.
4. Supply 10 lots of 1,000, 5 lots of 2,000 or 1 lot of 10,000 - and the cooks job is complete.
There are variables: where the powder comes from, the mixers, the colour, the stamp, the size of the pill, the amount of MDMA/pill, the amount in the batch, the cooks first name (
), etc.
Remember - they are only the variables, not the determinants. The makers don't give a shit how much MDMA/pill, colour, stamp, etc - as long as they shift.