Defining UX testing
You should question the requirements throughout your testing process, checking whether they still make sense or whether there are better ways the same goals could be achieved. This is particularly the case in UX testing when there are many ways to present the information and controls. Still, not everything is in scope for your testing.
The colors the designers have chosen, whether the interface is skeuomorphic or abstract, the font they’ve chosen – none of those are the test team’s responsibility. There are two classes of such issues to check for. Firstly, you must check how easy it is to understand and interface. If fonts are hard to read or the colors make it hard to understand, those are problems that need to be fixed. Feel free to provide ideas and feedback on other aspects, but so long as your product reaches a minimum threshold of usability, trust your design team’s decisions.
Important note
Skeuomorphic user interface...