feat: allow users to pass ring_color param (#2075)

* fix: prevent crash if undefined color is passed to func fallbackColor

* feat: allow users to pass ring_color param

Before this commit, the ring color was always equal to the title color.
This commit allows the user to pass a ring_color property to allow him
to style the ring color the way he pleases to. If no ring_color is
passed we default to the title color.

* docs: improves ring color documentation

* fix: improve code style

Co-authored-by: rickstaa <rick.staa@outlook.com>

tests/utils.test.js

@@ -48,6 +48,7 @@ describe("Test utils.js", () => {
     let colors = getCardColors({
       title_color: "f00",
       text_color: "0f0",
+      ring_color: "0000ff",
       icon_color: "00f",
       bg_color: "fff",
       border_color: "fff",
@@ -57,6 +58,7 @@ describe("Test utils.js", () => {
       titleColor: "#f00",
       textColor: "#0f0",
       iconColor: "#00f",
+      ringColor: "#0000ff",
       bgColor: "#fff",
       borderColor: "#fff",
     });
@@ -75,6 +77,7 @@ describe("Test utils.js", () => {
       titleColor: "#2f80ed",
       textColor: "#0f0",
       iconColor: "#00f",
+      ringColor: "#2f80ed",
       bgColor: "#fff",
       borderColor: "#e4e2e2",
     });
@@ -87,11 +90,31 @@ describe("Test utils.js", () => {
     expect(colors).toStrictEqual({
       titleColor: "#fff",
       textColor: "#9f9f9f",
+      ringColor: "#fff",
       iconColor: "#79ff97",
       bgColor: "#151515",
       borderColor: "#e4e2e2",
     });
   });
+
+  it("getCardColors: should return ring color equal to title color if not ring color is defined", () => {
+    let colors = getCardColors({
+      title_color: "f00",
+      text_color: "0f0",
+      icon_color: "00f",
+      bg_color: "fff",
+      border_color: "fff",
+      theme: "dark",
+    });
+    expect(colors).toStrictEqual({
+      titleColor: "#f00",
+      textColor: "#0f0",
+      iconColor: "#00f",
+      ringColor: "#f00",
+      bgColor: "#fff",
+      borderColor: "#fff",
+    });
+  });
 });
 
 describe("wrapTextMultiline", () => {