How to make my pasta less brown?
For cooking in with the pasta, consider red or yellow bell peppers, carrots, cauliflower or other vegetables that hold their color well when heated. Also, you can help this problem a lot with good, flavorful, beautiful garnishes. Even a simple shower of minced parsley goes a long way. Lemon or orange zest is nice too. 

Check out this peppery red-wine capellini from my blog, you'll see how the quick, fresh garnish of cherry tomatoes and parsley turns a brown pasta bright (and maybe learn a new way to cook pasta too).