abstract appearance architectural art-glass artistic artistry black color coloration colored colorful colors colour coloured colourful colours contrast craftsmanship dark decorative design designed Designs distinctive frame framed frames geometric geometrical glass lead light lighting lines patterned patterns perspectives rectangle rectangles rectangular reflected reflection reflections rippled shaped shapes stained-glass textured textures window grid-patterns grids groningen Martinitoren Martinitoren Groningen sky tree biker driving exercise motion motorcyclist move movement race speed city garden dusk evening nature. roses summer garden sunset