It is possible to refinish the TCC2 using vinyl wrapping. We have 3D and drawing files available below for exact measurements.
https://assets.sennheiser.com/global-downloads/file/11615/TeamConnect_Ceiling_2_3D.stp
Our recommendation is to source high quality vinyl wrap, and utilizing a local vinyl wrapping specialist - such as within the auto industry - to assist.
We don't advise re-painting the TCC2, as this can void the warranty in the event of an issue and can also risk affecting the capsules performance.
Attached is also a downloadable pdf guide on Vinyl Wrapping your TCC2 unit.