Issue with new floating Colour Selector in Storyline 360

Hello Graeme, 

Thanks for reaching out! 

You can select multiple objects in the slide using the Ctrl key and change their colors all at the same time using the Color Selector. This will save you some time if you need to change the fill color of multiple objects. 

As for the 'No Fill' option, this is something that should be available for you when you click on the Shape fill option. 

As a troubleshooting step, try doing a repair of your Storyline 360 installation to see if this helps correct the issue.