MeMoiJuneau Diamonds Cotton Tights for Women, Cozy and Elegant Sweater Tights - Sizes Small to X-Large

I don't like tight elastic in waist, do you know if the elastic waist band for M/L is comfortable not very tight?

Which color is which? I'd love for memoi to do better work on their Amazon pages so I didn't have to ask.

what size exactly is large an x-large (2x-3x)?

I'm a 5'5, 150 lbs female with a slender body and 34b chest, i wear a 6/8 dress usa, 9/10 pants usa. what size would you recommend i get?