LibGfx: Parse hex, rgb() and rgba() colors before named colors

This avoids doing a bunch of unnecessary string comparison work in case
we have something that can't be a named color anyway.

Userland/Libraries/LibGfx/Color.cpp

@@ -267,21 +267,7 @@ Optional<Color> Color::from_string(StringView string)
     if (string.is_empty())
         return {};
 
-    if (string.equals_ignoring_ascii_case("transparent"sv))
+    if (string[0] == '#') {
-        return Color::from_argb(0x00000000);
-
-    if (auto const color = from_named_css_color_string(string); color.has_value())
-        return color;
-
-    if (string.starts_with("rgb("sv, CaseSensitivity::CaseInsensitive) && string.ends_with(')'))
-        return parse_rgb_color(string);
-
-    if (string.starts_with("rgba("sv, CaseSensitivity::CaseInsensitive) && string.ends_with(')'))
-        return parse_rgba_color(string);
-
-    if (string[0] != '#')
-        return {};
-
         auto hex_nibble_to_u8 = [](char nibble) -> Optional<u8> {
             if (!isxdigit(nibble))
                 return {};
@@ -329,6 +315,21 @@ Optional<Color> Color::from_string(StringView string)
             return {};
 
         return Color(r.value(), g.value(), b.value(), a.value());
+    }
+
+    if (string.starts_with("rgb("sv, CaseSensitivity::CaseInsensitive) && string.ends_with(')'))
+        return parse_rgb_color(string);
+
+    if (string.starts_with("rgba("sv, CaseSensitivity::CaseInsensitive) && string.ends_with(')'))
+        return parse_rgba_color(string);
+
+    if (string.equals_ignoring_ascii_case("transparent"sv))
+        return Color::from_argb(0x00000000);
+
+    if (auto const color = from_named_css_color_string(string); color.has_value())
+        return color;
+
+    return {};
 }
 
 Vector<Color> Color::shades(u32 steps, float max) const