Ryzen 5 2600x pre applied thermal paste

[lx EZkiller xl]

I am building my PC this weekend and I was planning on just using the pre applied thermal paste. But upon inspection, it seems (dirty). I was curious if that’s ok or even normal or should I order different kind. Now this is my first build and I would consider my self a complete novice.

[Slottr]

It'll be fine

[czach75tac]

Definitely looks dirty. I just installed the 2700X in my rig 2 days ago and it came with the wraith prism cooler. The thermal paste that was on the bottom was real thick and seemed like it was drying out. I did buy some  Artic something thermal paste though and did wipe it off however it just seemed weird how the new paste compared to the factory stuff. For as cheap as a tube is it is no harm to just buy some down the road.