Follow the below to add multiple colours to a project

1. Select the project you wish to update the colours for
   
   
2. Under the Colours section, select Colour List
   
   
   
3. Select Options, then Edit Colours
   

   Select Options	Select Edit Colours

   
   
   
4. Your will get a screen with a search bar, search for the colour you wish to add
   
   
   
5. Add multiple colours this way (note they aren't saved yet)
   
   
   
6. Press Save, then you'll be sent back to the previous screen showing the colours which have been added