In the shape editor (and other places), if you click on one of the preset colour buttons, the shape takes on the colour immediately. However, if you go for a custom colour, the standard windows colour chooser pops upand you can pick or edit, but the output colour changes only after you've clicked "OK" and dismissed the dialog. If I pick an orange for instance it often comes out very similar to yellow on the projector. So I have to re-open the chooser, drop the green a little, OK, and maybe repeat that several times. It would be better to be able to update the output colour on the projector whilst the colour chooser is active. No "OK" button, just a "Cancel" to revert to the original state.