Yellow color from brand new Pre-Seasoned Lodge Cast Iron griddle (before seasoning or even heating). Is this normal?

I received my Lodge 10.5 inch pre-seasoned cast iron griddle today (and I’m very new to the world of Cast Iron). I washed it with water and soap and used the soft side of the sponge and on second wash I used the rough side. While waiting for the pan to dry (before I was going to start seasoning), I tried dabbing the sides with a paper towel to remove some of the moisture and I noticed a yellow stain of sorts coming off of the pan. I washed the pan again a couple of times but there still seems to be a yellow stain. Is this normal? I haven’t seasoned the pan with oil or anything.

Also, I know cast iron pans aren’t perfectly smooth like a nonstick Teflon pan but there’s a very small grey bump on my pan. Is this acceptable?

Edit: The pan upon drying looks rusty and it appears yellow-orange like on kitchen towels if I try it rub it.

Edit 2: Thank you everyone for your comments, feedback and advice. I’m a complete newbie and I’ve been reading and watching as much info about cast iron usage and I, really, appreciate them. I don’t own a oven so I’ve been using a stovetop to season the pan. After about 3 rounds of seasoning, I attempted a fried egg test with cooking canola oil(I think my pan was too hot/medium flame) but failed twice. Today (24 hours later), I attempted the fried egg test using a teaspoon of butter (preheated the pan and used a low flame) and it came off quite cleanly except for when I tried to flip it over and a bit of it got stuck. (check images 4 and 5). However, I’ve noticed a dark brown color tone around the pan (image 6) except at the periphery. I don’t know if this is because I’ve seasoned it incorrectly.