The new Google logo is displayed at the Google headquarters on Sept. 2, 2015 in Mountain View, California.
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May 10, 2016 10:35 AM EDT

Google tested the appearance of its search results for a small number of users Monday, swapping the traditional blue links that appear in a Google search for black links.

“We’re always running many small scale experiments with the design of the results page,” a Google spokesperson said in a statement, CNN Money reported.

Many people who were among the unsuspecting test subjects for the change voiced their frustration with the color swap on social media. It’s not clear if the change is here to stay.

“We’re not quite sure that black is the new blue,” the Google spokesperson said.

Write to Katie Reilly at Katie.Reilly@time.com.

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