We're seeing a definite trend toward fashion in carpet. Textures, different types of yarn systems, different colorations, patterns, tone-on-tone prints, looped carpet, tip shears anything that has interest or fashion seems to be very accepted.
Have a color in mind? Pair it with different types of construction to see the effect. The luster and softness of the fiber affects the look of the color. Get a luxurious, suede look with really soft fibers, or a more dimensional color and casual look with longer, textured yarns.