input-color: add keys for color space attributes (#2970)

Author: ddbeck

features/input-color.yml

@@ -5,5 +5,12 @@ group:
   - forms
   - html-elements
 caniuse: input-color
+status:
+  compute_from:
+    - html.elements.input.type_color
 compat_features:
+  - api.HTMLInputElement.alpha
+  - api.HTMLInputElement.colorSpace
+  - html.elements.input.alpha
+  - html.elements.input.colorspace
   - html.elements.input.type_color

features/input-color.yml.dist

@@ -11,4 +11,25 @@ status:
     safari: "12.1"
     safari_ios: "12.2"
 compat_features:
+  # ⬇️ Same status as overall feature ⬇️
+  # baseline: false
+  # support:
+  #   chrome: "20"
+  #   chrome_android: "25"
+  #   edge: "14"
+  #   firefox: "29"
+  #   safari: "12.1"
+  #   safari_ios: "12.2"
   - html.elements.input.type_color
+
+  # baseline: false
+  # support:
+  #   safari: "18.4"
+  #   safari_ios: "18.4"
+  - api.HTMLInputElement.alpha
+  - api.HTMLInputElement.colorSpace
+
+  # baseline: false
+  # support: {}
+  - html.elements.input.alpha
+  - html.elements.input.colorspace