Disable "Material Design" in Chrome 55

Does anyone know of a way to disable the new "Material Design" in Chrome 55 x64 (*beta) for Windows?
I previously had this ugly new theme disabled with some flags in the chrome://flags page but they appear to have changed and I can't seem to disable it anymore.

Googling only gives me the previously used flags which don't seem to work anymore.

Install Chrome 54 May help

pitrex29 said:

Install Chrome 54 May help

Click to expand...

Thanks I guess I would have to but then I miss out on security fixes... Honestly I've gotten used to it at this point. Thanks for the link though!