STYLETHREAD -- LET'S TALK SHOP!

If you already have a pretty basic wardrobe, then I think accessories are the best way to liven things up.  Tights and scarves are always great, as are boots and big chunky necklaces.  A few belts will probably help liven up your look too.  Also I think mixing textures is a good way to mix things up this fall.  Tweed pants with a cordoroy blazer in some pretty fall colors is a look I'm planning on wearing this fall.  A sweater vest over a button down would also be a cute way to add some ooph to your outfit without being too over-the-top for a conservative corporate wardrobe.

Here are some ideas:

You can also experiment with color combinations.  I tend to wear a lot of jewel tones too.  I find that wearing them with browns tends to make the outfit look warmer and a little more unusual than pairing them with greys and blacks.  I've also found that adding in some different colors like rust, olive green, and navy look good with some of those colors as well.  HTH!

If you have a nicer pair of bermudas or cropped pants, you could wear them with boots or tights and heels for fall/winter .

IMO you can do alot with a sweater vest in a fun, offbeat color too.