1974 Porsche 914 2.0 liter

I've pulled my engine and in the process of cleaning and changing out old seals.

Started to change out "O" rings on pushrod tubes. I purchased a year ago these O rings, cant remember where, but I have a brown and dark brown. All the videos show green and red O rings. Do I have the wrong ones? Thanks for your help.

Regardless of the color, they should be two different sizes. The inner end is smaller.

I think the ones in the gasket kits are green. Some that I’ve purchased separately as viton have been brown. Those are allegedly better/less prone to leak.