diff --git a/test/types/defaults.ts b/test/types/defaults.ts
index 84071849245..ae3eff23ac5 100644
--- a/test/types/defaults.ts
+++ b/test/types/defaults.ts
@@ -16,6 +16,22 @@ Chart.defaults.font.size = '8';
 // @ts-expect-error should be number
 Chart.defaults.font.size = () => '10';
 
+Chart.defaults.backgroundColor = 'red';
+Chart.defaults.backgroundColor = ['red', 'blue'];
+Chart.defaults.backgroundColor = (ctx) => ctx.datasetIndex % 2 === 0 ? 'red' : 'blue';
+
+Chart.defaults.borderColor = 'red';
+Chart.defaults.borderColor = ['red', 'blue'];
+Chart.defaults.borderColor = (ctx) => ctx.datasetIndex % 2 === 0 ? 'red' : 'blue';
+
+Chart.defaults.hoverBackgroundColor = 'red';
+Chart.defaults.hoverBackgroundColor = ['red', 'blue'];
+Chart.defaults.hoverBackgroundColor = (ctx) => ctx.datasetIndex % 2 === 0 ? 'red' : 'blue';
+
+Chart.defaults.hoverBorderColor = 'red';
+Chart.defaults.hoverBorderColor = ['red', 'blue'];
+Chart.defaults.hoverBorderColor = (ctx) => ctx.datasetIndex % 2 === 0 ? 'red' : 'blue';
+
 Chart.defaults.font = {
   family: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
   size: 10