Mods are suggested or appointed with growth or as other mods have moved on. There are several long time members in the que for the next batch. It obviously helps to know administration and other mods really well.
If you are interested in being a mod, write, in detail, to administration or another mod with why you want to be a mod.
Orange can be requested from a mod or administration. You need to be well involved within the industry, meaning having employees and stuff, like tax numbers to establish legitimacy. Some pros are orange simply due to their interaction here on NS or by request from their team managers. Park/Mountain/General Managers and some media/marketing managers for resorts are also orange.
Message those orange people , they are the reps that are orange to bring attention to their products or place for close to the source information.