Have mine for 27 days now. Has not detected anything negative. Good that it does not follow bloatware that can not be removed (as opposed to Huawei!) Comes with some apps, they are easy to remove.
Building quality has been very good so far, but it does well with most of the napkins. My first Xiaomi nap, much more pleased with this than my previous huwawei honor.
Edit: Bought the blue and it is light blue / turquoise.