attribute clash
display artefact caused by limits in the graphics circuitry of a some colour 8-bit home computers, most notably the Sinclair ZX Spectrum, where it meant that only two colours could be used in any 8×8 tile of pixels
en-GB/ˈætɹɪbjuːt ˈklæʃ/
en-US/ˈætɹəˌbjutn ˈklæʃ/