I don't think these are fair comparisons. In "blacklist" and "whitelist" there is clearly an association black = negative and white = positive. That is something that should be corrected.

In "blackbody" and "black hole" the modifier "black" corresponds exactly to the ordinary meaning of the word "black" in English: it absorbs light. In "white noise" we again correspond closely to the usual understanding of white light. "Whitespace" comes from the usual color of paper, which is the original medium for typesetting. None of these terms indicates a value judgment.