hmmm... my list is also short and green (because I have no idea what the others are, other than khaki)
Colors that begin with K :
* Kelly Green ( A light shade of green)
* Key Lime (a lighter green)
* Khaki (a brown-tan)
* Kinatone
* Kiwi Green (A light green)
* Kohl
* Kuning (means yellow in Bahasa Malaysia)