When snow removal contractors first started using snow markers, they simply cut a bunch of 1 x 1 wood stakes, painted them orange and stuck them in the ground. Now, staking a property is done much simpler, also, the property markers look a lot nicer and compliment the landscape. Not only is it important to use snow markers that are of high quality, it is also important that they look great, particularly for high traffic area. With the color options Discount Snow Stakes and others offer, you can color coordinate your properties.

Orange driveway markers are the most popular snow marker on the market. In most retailers this is the color that you find and most snow removal contractors prefer them. Orange is pretty much associated world wide with safety and they are probably the most vibrant property reflector of all the colors.

Yellow snow stakes is definitely the second most popular snow marker. It is a good alternative to orange but also allows you to stand out from your competitions property markers.
Green snow markers are next, although it is a fluorescent green on the snow stake, it does not quite jump out at you as much as the orange and yellow. Green snow markers are great though because when the snow melts or before the snow arrives, these stakes blend in well with grass. Also, many landscapers have green as their company colors so it is to associate them with the company and match any signage.
Blue driveway reflectors are popular among homeowners, companies with blue in their colors and also towns and municipalities who mark water basins or edges of bodies of water. These are a really nice looking snow marker and have grown in popularity. 
Overall, the most important thing is to mark the properties and keep them safe from the plow trucks, but if you can do it by adding a bit of professionalism, it goes a long way with property managers. Being able to get multiple colors for your snow markers can be beneficial and it is highly recommended.