Repro Steps:

1) In a new Project, create a 'Master' page.
2) Create a couple Colors inside the Project's Global Dictionary.
3) Create a new Component.
4) Attempt to apply one of the Global Dictionary Colours to any element within the Component.
Observe that none of the Global Dictionary Colours are visible in the Colour Picker.

5) Within the Component, go to the Resources tab, and select the Component.
6) Merge the Global Dictionary to the Component.
7) Open the Colour Picker for an Element within the Component, and attempt to apply a Global Dictionary colour.
Observe that none of the Global Dictionary Colours are visible in the Colour Picker.

Expected Result: All Global Dictionary Resources are universally-accessible.