Not sure if this is a bug. We are Fire Risk Assessors so are often need to either colour in a wall or change the colour of a door on floor plans. We also have to draw lines to show the length of a certain route. Here's what I've noticed:
1 = The fill colour choices for a Polygon are not the same as the Change Colour choices for a Snapshot.
2 = Line colours in the installed version are not available in the cloud version.