Both are covered with Edmund Scientific black felt. The primary is also baffled, just in front of the glass, and totally enclosed in ultra flat black. It is an impressive demonstration to shine a powerful flashlight on any part of the scope, and discover that your observing buddy looking through the eyepiece with his eye cupped cannot tell you when you have the light on or off. The goal in baffling a minimalist ultra light is to block every ray of light not coming from the primary mirror. Extra baffling to absorb secondary reflections from the baffles is used in high performance refractors, but this is a luxury we can forego since the flashlight test is quite convincing when using light trapping felt or velvet.
Some traditionalists are upset by the absence of a shroud.
With a heated diagonal, and proper baffling, the shroud is superfluous. Dewing of the primary is a concern, that's why many of us use a fold up mirror box cover plate or a separate lightweight piece that sits on top of the truss arms extending above and outward from the mirror box. A fan will help keep the primary at air temperature and thus avoid moisture condensation. Mirrors that sit in a totally enclosed lower end rarely dew, but think a moment about what this really means - namely that the primary will take a long time to cool down and give razor sharp images. One of the unmentioned reasons for off axis masks is exactly this - not lack of optical quality or bad atmospheric seeing, but instead, optics that are forever cooling and never giving those wonderful refractor like planetary images.