If you had the options set up a categories then it would certainly be easy to differentiate the types of listings and for users to browse those categories, but additional customization would be required in order to color code them as you have mentioned. You can also create custom forms in Vantage, so it would be possible to have the user select the relevant option from a drop-down menu and have it appear on the listing. Vantage doesn't yet have the functionality to specifically search custom fields, but this is planned for a future release of the theme. Thanks.