The same red-and-blue idea can be relaxed, practical or a little more layered. Change one piece at a time so the outfits remain useful after the character reference is gone.
For a warmer day
Choose the short-sleeve plaid shirt with dark jeans and carry the navy daypack only if you need it. The red sweatshirt and denim jacket are both long-sleeved, so reserve those layers for cool rooms or evenings. White sneakers keep the outfit from feeling too heavy in the sun.
For a cooler day
Wear the red sweater or crewneck with denim as the outer layer, depending on whether you prefer a smooth or textured finish. In the women’s look, the dark jacket adds warmth while framing the red knit. In the men’s campus look, a lightweight layer from your closet can go over the plaid without changing the palette.
For a practical day out
The plaid shirt and navy backpack make the most functional outfit for commuting, class or a long walk. Keep the bag weight comfortable and adjust both shoulder straps. For a shorter casual outing, use the red crewneck and jeans without carrying anything extra.