Replying to edge problems

ok so i dont know much about actual ski tech and stuff, and basically took my new 10's out for the first time for a week in france and in different places along both edges there are these kinda brown spots, they kinda almost look like rust or something underneath the metal. not sure what it is and if its a prob so i would totally appreciate it if anyone knew and could give me some advice.
Cheers


This isnt 'Nam Dude, this is bowling there are rules