The normal "ABS Black" color of the outside of the Ventenna may be painted with any non-metallic-based paint. This allows you to match the Ventenna to the other fixtures on the rooftop, making it as stealthy as possible.
As to the radiation pattern - The Ventenna has a pattern like a vertically-oriented dipole. This means that the 6 dB down point in the pattern will be at a depression angle of about 60 degrees. So, even if you are high up in the air - say in a New York apartment - you should be able to access stations lower than you quite easily. (FYI - 6 dB signal change is one "S" unit on the receiving radio's "S" meter.) The horizontal radiation pattern of the Ventenna is essentially omnidirectional.
Ventennas are guaranteed to be under 2:1 SWR over the specified operating range, and, at about the middle of the range, the SWR will be at or below 1.2:1. For special-frequency Ventennas, the 2:1 SWR bandwidth is typically +/- 1.25%.
Power Ratings. - Below 800 MHz, the power limitation is 200 Watts, due to the RG-58 cable used. Above 800 MHz, the power is limited to 100 Watts, due to the construction of the antenna.
Ventennas are normally supplied with the coax coming out the side, a few inches up from the bottom. The coax is about three feet long, terminated in a BNC-M connector. You connect your coax to this pigtail and run it to a convenient location for entry into the building. As an option, the coax can be run down inside the pipe, for complete stealth. See the write-up on Inside Coax for a description of the installation possibilities for this option.