You can a good idea of how it will look by seeing some of our products - http://custom-tiles.com/tile-pictures-3

No, its not suggestive unless and until your get the seepage repaired. If its not repaired and tiled then the seepage will get diverted to some other wall .

Hi, Tile trims come in aluminium, stainless steel and PVC. 1] You can use PVC trims if you don't want to use metal trims. They are water resistant and durable. PVC trims come in a variety of colours so you can also choose the colour that goes with the rest of your tiles and bathroom. 2] A stainless steel trim is extremely durable and is highly resistant to corrosion and abrasions. Due to this it is widely used in factories. 3] Aluminium trims come in a variety of finishes. Anodized aluminium trims come essentially in metallic colours like silver, bronze, copper, gold. Powder coated aluminium trims come in a variety of colours and don't give the metallic look but offer adequate resistance to water damage. Thus, you can either go for PVC or powder coated aluminium trims if you are not fond of the metallic look. All the best! Regards, RnD Atelier Nagpur

It would be better if you can consult Admixtures company like ., Myk laticrete, Bostik ., etc It's a kind of plaster STUCCO...