FONT COLOUR IN EDITOR (TRADOS STUDIO 2015 STARTER)

Hi! I am new to Trados -- bought the Starter version like three weeks ago.

I am translating a book about birds. The client sent .idml files, which I can open and work with on Trados (I have no InDesign, though).

BUT the text on my editor is pink (I have also seen blue).

At some point I must have done something which I can't recall and the text in the editor is now pink or blue, depending on the file. I do recall managing to change the font size so I didn't become blind, but that's it, I believe I did nothing with colour.

Although no ideal, I can work with pink, but turquoise... that's another thing. Please, see the screenshots below for an example.

Hope someone can help me... Thanks in advance!

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