In my local shop, they offered the flavors green, red and yellow spaghetti (supposedly made out of green, red or yellow lentils). I bought the flavor green, cause it had been some time since I ate green lentils.
The end of the story is that green lentil spaghetti do not taste as good as regular spaghetti once cooked. They taste rather flat. So, I guess an easy solution would be to drown them in salsa.
However, I discovered the trick how to make them tasty. Take some fresh garlic (I took 2 bulbs) cut it into thin disks and fry it in olive oil (alternatively you can take flavored sunflower oil). In the meanwhile cut a zucchini into small pieces and fry it in the pan together with the garlic. Once the garlic turned a little bit brown, stop heating and add the spaghetti.
The result has a smoky flavor and is yummy. In the picture above I added some fresh green bell pepper (to unsuccessfully try to improve the picture). You can add whichever vegetable sauce you want; it fits well to both red and white wine!