HA Ha, I just did a quick sketch, the deep orange is a deep yellow and as the orange lightens, so does the yellow. The deep purple is shades of lavendar and lillac with bits of pale, pale (almost white) lillac. Thanks for the ceiling idea. It’s going to look great, and the walls will be sponged shades of yellow. Great! Thanks!!!
If you did that in the pump house you could call it the “Cistern Chapel”...