Added function to initiate theme with proper saturation if instantiated with less than 100% saturation (#172)

Author: NateBaldwinDesign

packages/contrast-colors/test/themeSetters.test.mjs

@@ -62,6 +62,13 @@ test('should set theme output to LCH', () => {
 });
 
 // Saturation
+test('should set theme saturation to 60%', () => {
+  const color = new Color({ name: 'Color', colorKeys: ['#2451FF', '#C9FEFE', '#012676'], ratios: [3, 4.5], colorspace: 'CAM02' });
+  const theme = new Theme({ colors: [color], backgroundColor: '#f5f5f5', output: 'RGB', saturation: 60  });
+  const themeColors = theme.contrastColorValues;
+
+  expect(themeColors).toEqual(['rgb(119, 142, 193)', 'rgb(90, 107, 187)']);
+});
 test('should set theme saturation to 60%', () => {
   const color = new Color({ name: 'Color', colorKeys: ['#2451FF', '#C9FEFE', '#012676'], ratios: [3, 4.5], colorspace: 'CAM02' });
   const theme = new Theme({ colors: [color], backgroundColor: '#f5f5f5', output: 'RGB'  });

packages/contrast-colors/theme.mjs

@@ -41,6 +41,9 @@ class Theme {
       throw new Error(`Output “${output}” not supported`);
     }
 
+    // Only run the update if saturation is set below 100%
+    if(this._saturation < 100) this._updateColorSaturation(this._saturation);
+
     this._findContrastColors();
     this._findContrastColorPairs();
     this._findContrastColorValues();