I am having a hard time figuring out what you're trying to say. Maybe "Most matters in life appear different depending on your approach."

"To them" can't be a separate sentence. Also it is perhaps a bit of a mixed metaphor. You view colours, (colors in the US) you don't approach them. Except for the sentence fragment it works grammatically, but is not idiomatic to my US ear. Perhaps; " Most matters in life can take on a different color depending on your point of view. "

I think I know what you mean but "are coloured differently" doesn't sound very natural to me. Here's a slightly different version: Most matters in life take on a different light depending on your approach to them.