Konis are red, like in your photo which also shows the Koni decal.
They're usually set up to have liitle resistsnce on bump, but a lot more on rebound. So pushing in is quite easy, and so is pulling out slowly.
Pulling out in a hurry should be difficult if they're in good shape, and I'd really be surprised if they weren't. Konis are pretty much unburstable and last for ever, in my experience, though Ii must confess I don't know how to date them. Looks like someone did some serious upgrades to your car in the past.
'67 Elan S3
'72 Europa TC