Browse baby boutiques and online shops for baby boy bedding that appeals to you. Look specifically for colors that look nice against white, such as soft blues, soft greens, brown and white. While gender-neutral bedding is often a good choice for baby boys, you will likely want to avoid it with a white crib, particularly if you are aiming for a boyish decor. Against a white crib, gender-neutral bedding and crib accessories can appear feminine.
Select a crib bedding set and use that theme to decorate the room. Crib sets that are themed with sailboats, sporting goods, blue bears or stripes are good choices for a baby boy's room. Purchase matching accessories such as wall hangings, hampers, area rugs and curtains to tie together the room.
Outfit the white crib with the crib sheet and bumper. The matching comforter can be draped over the side of the crib for aesthetics, and matching decorative pillows and stuffed animals can be placed inside the crib to complete the look.
Hang a matching mobile over the crib. If it doesn't match the bedding precisely, make sure it complements both the white crib and the colors in the bedding.
Attach a few wall hangings behind the crib. If you are hanging up framed pictures, use a white frame to match the crib. You can also spell out your baby boy's name in white block letters. This look is particularly effective against a pale blue or green wall.