Appearance-modifying device, method for manufacturing such a device, and appliance covered by such a device

An appearance-modifying device covering a surface and modifying a visual appearance of said surface, said a appearance modifying device comprising:

• first and second oppositely arranged substrates;
• a spacer structure spacing apart the first and second substrates, wherein a space between the first and second substrates is divided into a plurality of cells arranged in an aperiodic cell pattern of a plurality of cells of a first size and a plurality of cells of a second size, said second size being smaller than said first size, wherein said plurality of cells of said first size are used to form symbols, said plurality of cells of a second size are not used to form symbols, and a plurality adjacent ones of said plurality of cells of said first size are surrounded by a plurality of said plurality of cells of said second size;
• and
• an optically transparent fluid having a plurality of particles dispersed in each cell, the particles being moveable in the fluid through application of an electric field.