Some general rules should never change, for consistency's sake.
- blue text = link to existing page
- red text = link to not existing page (only occurs for "discussion")
- black bold text (where a link would be fitting) = self link
Thus overriding a link color, especially to red, is confusing and should be avoided.
Be careful with colors, and especially contrast:
- Be aware of the contrast of both plain text and the blue link text with the background color and avoid clashes where possible (such as blue writing on a red background).
- If an article overuses colors, add a tag to the top of the article: {{Overcolored}}