Blue Shifting: Difference between revisions

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{{tropeUseful Notes}}
{{quote|''Thanks for finally blue-shifting the [[Metal Gear Solid|MGS]] links, BTW.''|[[Tropers/Ununnilium|Ununnilium]]}}
 
On most Wikis, a link to an existing entry is in blue, and a link to a non-existing one in red. If a particularly interesting item is linked a lot, and yet no one actually creates the page to go with it, the text remains red.<ref>Since the addition of color-coded links in 2016, pages here on All The Tropes will actually be a mix of green and blue, with green linking to tropes and blue linking to works and creators. If this bothers you, see [[Green Is Blue]].</ref>
 
Then someone does create the page, and the resulting change in colour scheme makes the world feel slightly better. When this gets out of hand, you get an [[All Blue Entry]], and when it outspills the wiki environment, you've got [[Blue Fever]].
 
This is an allusion to [http://en.[wikipedia.org/wiki/Blue_shift:Blue shift|a particular instance]] of the [http://en.[wikipedia.org/wiki/Doppler_effect:Doppler effect|Doppler effect]] in physics.
 
For the ''Half-Life'' expansion, see ''[[Half-Life (series)|Half-Life]]''.
 
{{noexamples|this is one of those [[Omnipresent Tropes]].}}
 
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