Bad colours on iOS 11.2

Hi, I've made Rubik's cube application for app store and after publishing I've found out that on devices with iOS 11.2 is white and grey color changed to red. I'd like to ask if it is a bug in this version.

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Can you talk about where those colors are used and how they are made? Icons? Backgrounds? Are they hard coded or chosen from a picker in IB, etc.?

Is it the same red you use elsewhere in the app ? Is this the color of another png image ?

No, it's like if it used only red values from rgb. When it should be white it's rgb(255, 0, 0) and when it should be grey it's rgb(162, 0, 0).