[Ragnarok-X]

i cant really promise that its a new and good strategy, but my first 4 turns are usually emergency building 4 base space yards. I think it may turn out faster than emergency building 10 colonizers.

Using "my" strategy you will have 4 base space yards by turn 4. Then you start colonizers on homeworld (6). So by turn 10 you will have 4 base yards and 6 colonizers, and in addition 4+ colonizers from the base yards.
It mainly depends on 2 values, primary the build cost of the colonizer (do you need 1 or 2 turns when emergency building from each yard for one colonizers) and your construction appitude (which may provide enough construction output to allow each base yard to build one colonizer each turn with emergency building).

So by turn 12+ you will have outrun the standart "emergency build 10 colonizers" build order.