Good machine, but discoloration of the mixing bowl is a no-go

Got today and tried the same Mschine. In a 7-person household it is easier for me as preparing our food. After I rapped over an hour by hand carrots for a carrot salad, I tried today no matter how fast it goes well with my new kitchen appliance. Of course it went ratzfatz! But I was a bit shocked when it quickly became clear that the accessory is significantly discolored and the tracks are no longer wegzuschrubben. Now I think it's not particularly aesthetic when the bowl in the future, too cake should contain, is permanently discolored unappetising orange. For this, I subtract a star, then you would have to use a standard stainless steel bowl I think. Otherwise, will show how it is in constant use.