I feel your pain! We also have the original builders off white in our 8 yr old home, I like light airy colors, no darks, they impact my mood. I'm supposed to be picking out paint colors too and the choices are so numerous, my painter gave me a big thick thing with lots and lots and lots (you get the idea) of paint chip strips. No purple, blues, pinks, oranges for me ... trying to find a nice subtle green, maybe sage for some rooms and a soft buttery yellow for my sewing room and bedrooms... it is so hard.
let us know what you decide, I might copy you!