Highlight the portion of text whose color you want to change
On the toolbar that will automatically appear below highlighted portion of text, select the „paint container” icon (the fifth icon from the left)
Click the „paint container” icon, and the following will appear: a large color rectangle for selecting shades, a color scale slider for selecting a color, a slider corresponding to transparency, a small square displaying the current settings and HEX number
Below the HEX number you can add and remove new color samples
To delete a given color sample, click a small square filled with the given color corresponding to your color swatch and click the „−” sign