Gs, the rental market is actually doing fairly well right now. With the amount of equity you have in your home, I would guess you will be able to obtain a positive cash flow. Highlands Ranch, in particular, has historically been a very good area for investment properties. Therefore, I think that should be an easy deal for you.
Regarding Greenwood Village, it has been fairly stable for the past 12 months. Depending upon price range you will find varying levels of great "Deals." If you are looking under $500k, you will notice that there is very low inventory and the best homes sell in a very short period of time. Between $500k-$1 mil. there are some pretty good deals right now, but the inventory is not extremely high. Over $1 mil, and you will be able to get a great deal. This segment of the market is the toughest for sellers at the moment.
I live in Greenwood Village and have sold homes here for over 18 years, and would be happy to provide you with further information.