Gildan Adult Heavy Blend Hooded Sweatshirt (White) (Medium)

I'm 5 4" and weigh 130ibs. i wear women's size s shirt and sometimes s or m for hoodies. which size would fit me for this product? thanks in advance.

Can it be exchanged if it doesn't fit?

Mint green color pic without man is bright & vibrant but in pic with man inside, green is dull & depressing. Which color is accurate?

Am 5'9 200 pounds anybody know what size i should get?