221G Different Color slip meanings?

[mane]

Hey, can anyone tell me what does different color of 221g mean? I've got Yellow but read in forum that people got blue and white slips too. What does that color means?

[hawkeye13]

What i have read so far is as below. (Might not be accurate but It is my understanding. Feel free to correct)

Blue - Request for more employer related Documents. So it is basically employer and employment check

White - Usually same as blue but more likely to be given to Client Vendor and Consulatants

Yellow - Background Checks - Usually additional documents are not required

Pink - Have seen mostly in H4 (dependent cases)

Green - TAL - Technology Alert - Acedemic credentials and Technology Checks

as i said before, might not be very accurate but feel free to correct them