Simply painting the outlet cover the same color as the wall is your best bet if you want a true match. ... Architectural Digest suggests painting outlet covers the same color and finish as the trim in a room for a subtle, textural effect.

Do all wall plates have to match?

Ideally they should match the wall, or at least not stick out like the proverbial sore thumb. You can usually paint the switch plates to match the wall. Lightly sanding the plate first will help the paint adhere.

Are all electrical outlet covers the same size?

There are three common wall plate sizes: standard, midsize/midway and jumbo. When selecting a size, the plate should completely cover the electrical box opening. If the opening is oversized, you may need a jumbo plate to conceal it.