Planting ideas for shed

I have a shed that is focal point (due to the size of the garden) and would like to plant some flowering shurbs in front of it to brighten up the view. It has small window so the shrubs need to sit underneath and flower for a long time. The shrubs will also border the lawn. The shed is painted very pale green. The site if fairly sunny and I thought perhaps some shrub roses but not sure of the variety? I would welcome any planting suggestions?

 

If you want shrub roses then you cannot beat, Rosa Mundi. Superb flowers, superb scent.:gnthb: