Wikipedia says that Weezer are an (obscure for me) American west coast rock band, some of whose self-titled albums are alternatively known by the colours (sorry, colours) featured. However, the clues are also 'colours', so would suggest that be an acceptable answer, too. Only saying.

Agree with javelin05

Weezer are definitely not obscure, but that group did need one non-color album title to make it work.

Sorry Javelin, I disagree. If colour was an acceptable answer then there would be nothing to stop you swapping Red and Black (Redbox being a reasonably well known streaming service) to make multiple non-unique solutions. Hence you should know that it must be more complicated than that.

‘Colour’ has to be an acceptable answer here - it’s the most obvious link. It’s also completely valid. If it isn’t deemed acceptable because it’s TOO obvious, then the setter has made an error with the grid. It’s not for the solver to say ‘Oh it can’t be that. It’s too easy.’ It’s for the setter to ensure that situation doesn’t occur. No offence Dingleberry by the way; thank you for taking the time to do the grid. We all drop the occasional bollock :-D