If the roof has a magenta cast finishing the siding with a blue tinged gray paint provides a subtle tie in to the blue element within the tiles.
Paint colors to go with red clay roof tiles.
I also think the house is slightly caught between styles.
Warm golds and beiges look nice on stucco homes with red tile roofs.
The soft shimmer of pale green mint washed out olive or pastel turquoise balances the warm roof with a hint of cool color on the walls.
Resene white pointer is a diffused neutral a stark off white with a hint of black.
Red tile roofs and stucco are mediterranean elements but the light blue shutters and lower railing are less so.
When manganese umber is going to be added to the perfectly firing red clay then it will help the manufacturers to create highly attractive brown colors which can be ranged from speckled to nutmeg and to chocolate brown depending on the sizing and quantity.
However manganese for roof tiles can also be used to change the color of clay tiles.
Desert tones and colors such as sand white cream very soft yellows and browns blend well with a hot dry environment complementing the red roof tiles.
I would also paint the garage door the same color so it becomes less of a focal point.
The green and blue tones pick up some of the subtle variegated colors in the clay roof tile overall contrasting dynamically with the warm color overhead.
If the red tiles lean toward orange a brown tinged.