I bought an expensive hoodie.Turns out a couple in my shool had the same color. How can I change it?

well i would get you some of the dye by rit and get the color that you want your hoodie to be then your have to use a bucket to put the dye in and fill the bucket up with water and then put your hoodie in the coloring and put your hoodie in it and get the whole hoodie so its completely covered and wait till you have it totally dyed the color you want let it dry then you might want to send it through the wash machine to get the excessive dye out so it doesn't bleed on your clothes or other clothes persumely by its self