>>2230838
(Very) generally speaking, the color guidelines are as follows:
RED - called slow strain - typically used by people with pain conditions and those that wish to mellow out from stress
GREEN - called medium strain - has the effects of caffeine - used by people that need a kick-start to an activity aka malaise type conditions
WHITE - called fast strain - similar to Green but more speedy so to speak
YELLOW - called euphoric strain - this is the rarest of available strains but used for people (particularly those trying to kick opiates/pharma chemicals) to best replicate the feelz for people with depression issues.
Bottom line: Be responsible, have a conservative start plan, and sample different ones to find the strains that best fit you as an individual.