[kiemuloly]

Somewhere between min and max

If you wipe it clean then reinsert after the cars been stationary for a while, it should be somewhere within those X's.

If that's what you did, it's a little bit high. Ideally drain some out as it's not good for the engine, but it's not massively overfilled so I wouldn't worry too much.

As for colour, it's not fresh but it's ok. Some would change it out now but you're good for a bit longer yet

 

[kiemuloly]

If they just dropped the oil without giving it time to drain, or didn't change the filter it wouldn't look clean after a service because it wasn't done properly.

Fresh oil is much lighter that that. As long as you're not running hot it's unlikely "something" is darkening the oil.

 

[kiemuloly]

Still having dirty oil in the filter/around the engine to mix and contaminate the new oil is the most likely.

Poor compression and escaping exhaust gases I think is another reason for it to go like that (unlikely)

Running hot aka no coolant I think is another option.

Or possibly just doing a fair few miles since the service

 

[kiemuloly]

It's possible it hadn't been serviced for a long time before, and the latest service is helping clean things up.

Another oil change isn't going to hurt, but looking at that I wouldn't worry yet

 

[kiemuloly]

I use Castrol magnetic 5w30 A5

When ever I've had garage supplied oil (other than ford) it's lasted 6 months and I've wanted to change it.

That stuff makes it through the service interval.

Though again some people would change every 6 months anyway. If the oil is clean and doing it's job I don't see the point