Johann. Going slightly off-topic but based on everyone's comments:
Why is black considered negative & white postive?
Black is dense, deeply opaque. More unchangeable.
White is more insubstantial, more ethereal & easily tainted.
Therefore, should our perceptions not be the other way around?
Which is warmer? Black or white?
Are our perceptions of these colours tainted by religious ideologies?
A lot of those questions exist because of the various connotations that those words connote. For example, negative can mean "the absence of". However, it can also mean undesirable. Black could mean the absence of light or it could be used as a socially outdated term for African-American people. These numerous connotations have to be explored in each context and then if harmonious, deductions can be made to some conclusion.
Interesting thoughts and questions