My favorite color palette for a farmhouse exterior with a tin roof. Porch ceiling Watery blue, Shoji white, and window sashes in Raccoon Hollow.
benjamin moore wales gray - Google Search
benjamin moore lido green - 617 - this color looks great with navy & pink (or orange) accents.
Piano Concerto by Benjamin Moore. I'd do the ceiling in the next lightest color.
Benjamin Moore - Suntan Yellow Hmm - I have some painted tin panels..
design indulgence: Benjamin Moore China White
Initially chose Creekside Green for our Laundry and Mudroom but while it was still in the paint can/tin it looked a little too green for my taste. Fabulous Benjamin Moore paint people at my local store tweeked it more towards this Storm Cloud Gray.
My newly painted yellow front door! Benjamin Moore yellow raincoat
Benjamin Moore "Wheeling Neutral" - rich neutral brown with a hint of gray.
consider experimenting with glazes on your ceiling