My 2 year old boy has this type of diarrhea with light red color...?

he has diarrhea for the last 2 days, he now has rash on his butt, he’s been pooping in green color most of the times, but i saw one yesterday and one tonight with something red colored, but not just parts, but all of it, it doesn’t seem like blood to me, but i don’t know, he doesn’t seem to be like with fever, vomiting, sick or dizzy, nothing, just the diarrhea, other than that you wouldn’t even noticed anything strange on him, and he is been drinking a lot of red colored juice kool aid, can that be? i mean, he pooped red colored yesterday, then he peed and there was no sign of red color for like 3 times, and pooped one more time green colored with no sign of red color, until this diaper change, what do you think? i will take him to the doctor tomorrow anyways… Thank you,