Shower pans are made to work with fiberglass shower surrounds and tiled walls.
Replacing shower pan in tiled shower.
If your shower has a shower pan replacing just the pan is possible but not always advisable.
Improperly installed shower floors can allow water to seep through the floor causing cracks or failure of the tiles which results in water leaking below the.
How to replace a tiled shower floor.
Ceramic tile showers that are properly built contain a waterproof barrier shower pan liner under them that catches water transferring through the tile floor and directs it down the drain pipe.
The point of having a shower pan is one part versatility and one part convenience.
Matching your tiles will be the problem though in most cases.