Regardless of the color of the sectional you choose, make sure your will continue to love its color once Fall and Winter set in. There is no right or wrong color. It depends what speaks to you and how well it is pulled together when the entire room is finished.

red leather doesn't exactly scream "spring" to me.

I think red can be beautiful paired with bright yellow and white. Think of bold floral pillows with maybe even a hint of lime green. If you keep your accessories in these shades you should have a bright and fresh "spring" feel to your room.