There are several "cockpit liveries" available for download in for example the "User Files" section of the official DCS website. Some people also make their own, with a few added decals etc.
Personally, I use a combination of 2 different cockpit mods: one with mipmaps removed for increased readability in VR, and clearer green cockpit glass in anticipation for a new cockpit model by ED that supports DS/PBR.
No so, there's no need to worry. Yes it's an old module that doesn't support changes ED made to DCS over 3 years ago, but we're all in the same boat 🙂