Format question

Hola,

RE:  what this means: [the] when used 

It talked about the use of [the] colours

I was wondering what is the meaning of the use of brackets [ ] and ( ) in these tests.

Sometimes it seems that this means that the word in brackets is used in Spanish, but if I remember correctly,

sometimes it does not mean this.

So if there is a way to find out what these means and any others, would be very appreciated.

Thank you.  

Also wishing you the best in this New Year to you and your team!

Nicole