Thank you to Dinca Andrei for creating the original Blue Skin
It can be found here : https://www.racedepartment.com/downloads/virtual-bmw-m235i-racing-cup-s1-dinca-andrei.6266/
To install just put it in the content>cars folder where the ks_bmw_m235i_racing appears.
I noticed that a separate skins folder was included. You can use this to install as well.
Enjoy