fix(theming): improve kale-500 color contrast (#1621)

Author: jzempel

packages/theming/src/elements/palette/__snapshots__/index.spec.ts.snap

@@ -56,7 +56,7 @@ exports[`PALETTE matches snapshot 1`] = `
     "200": "#daeded",
     "300": "#bdd9d7",
     "400": "#90bbbb",
-    "500": "#467b7c",
+    "500": "#498283",
     "600": "#17494d",
     "700": "#03363d",
     "800": "#012b30",

packages/theming/src/elements/palette/index.ts

@@ -77,7 +77,7 @@ const PALETTE = {
     200: '#daeded',
     300: '#bdd9d7',
     400: '#90bbbb',
-    500: '#467b7c',
+    500: '#498283',
     600: '#17494d',
     700: '#03363d',
     800: '#012b30'

packages/theming/src/elements/theme/__snapshots__/index.spec.ts.snap

@@ -128,7 +128,7 @@ exports[`DEFAULT_THEME matches snapshot 1`] = `
       "200": "#daeded",
       "300": "#bdd9d7",
       "400": "#90bbbb",
-      "500": "#467b7c",
+      "500": "#498283",
       "600": "#17494d",
       "700": "#03363d",
       "800": "#012b30",