Costume for the Band

I would like the band to all wear similar style outfits, however different colours. I do not mind particularly on the exact outfits worn by the band, as long as they fit into the style I would like. This is because I know that my actors, (Tommy, Callum, Joe and Matthew) all have clothes which fit the style I would like them to wear. I would like them to all wear either straight leg or skinny jeans (preferably), and a plain t-shirt either all of it being plain or with a simple logo on it. The footwear I would like them to wear could either be simple trainers, or a plimsoll/smart type shoe. This type of outfit is the style of the artists, Simple Plan. This means that as well as matching the artists 'look', it also will appeal to the target audience.  Below is an image of Simple Plan, which represents this style. I have also included example images of the type of clothes I would like the 'band' members to wear.