You can also change the text colour!
Select the word (or words) you want to change the colour of using your trackpad.
Click the capital A that looks like it has a black brick underneath it, this will open loads of colour dots you can choose from.
When all of the colours show up, you can also click on CUSTOM if you want to choose a wider range of colours.
Try to avoid the YELLOW, GREEN and PINK in the top row as these are hard to read (and to look at).