How about animal print? That would be on trend and look fresh. For example, this would look great with white, but it doesn't look bad at all with khaki!
http://www.bananarepublic.com/.....d=OUT11607
Otherwise, how about a top in a floral print (another trend right now)? I'm thinking of my floral top that has red, green, white and khaki in it. Works good with khakis and a red cardigan.
I have another shirt that has a print that has pink and white and brown; throw on a pink cardigan and it looks cute.
A pale, lemony yellow?
I also like black and white striped tops with khakis. Add a handbag and shoes in bright colors.
And I think red always looks great with khaki.
Throw in some white somewhere, if it still doesn't quite look fresh enough.
Another old standby for me (other than black and khaki, which always looks good to me and is a safe bet but can of course get boring), is this sleeveless v-neck sweater I have (very old BR) that is a perfect khaki match. This look isn't for everyone, but being only 5'0, I like playing around with monotone dressing for one long, lean line. The trick is, the top has to be in an absolute sumptious, lux-looking material that has some texture or something special.. .otherwise, blah! For interest layer on a bunch of necklaces and wear fab shoes.