I use the red dixie cups. You're plants would be fine in clear cups until the root systems made it toward the edges and became exposed to light. Roots hate sunlight-- stick with the dark colored containers. Good luck with your grow, cheers.
i figured once i saw roots on the edges i would transplant anyway. so thats what i plan to do. I germed 17 from some pretty good swag, and so far 6 have sprouted and are doing good.!