From Longman Dictionary of Contemporary Englishtwo-toneˈtwo-tone adjective CCTIMhaving two different colours or sounds two-tone shoes a two-tone alarm
Examples from the Corpus
two-tone• I could identify him easily because he was the only two-tone bream in the shoal.• The fact that he was a two-tone fish probably had nothing to do with his leadership.• The Trabant, for example, boasts textile floor covering and a two-tone horn.• In this collection, he has embraced Caterpillar work boots, done up for him in two-tone suede.• Why else would you have this two-tone teaming?• The two-tone upholstery and chrome door handles add to the look. 