when l smoke marijuana my eyes go bloodshot, but they also turn a different color as well. Why is this?

your pupils are dilating

BC youre stoned and you are seeing things. Also known as tripping out.

Because of the fumes that come out of the plant.

Do something useful with your life and lay off the marihoochie!!!

when your pupils become dilated the iris (colored part) squeezes together, concentrating itself, and therefore appearing to be darker.

you are all wrong, think about it, you smoke and your body is blood pressure rises thus making your eyes and mouth dehydrated, therefore, your eyes turn red.simple as that.

p.s. dont be a bum like the other dude who answered who couldnt balance a life between weed and being productive.its extremely easy to enjoy both in your life.