Remove protected area fill color (#3887)

Removes the translucent green fill from protected areas at z8-z10.
Defines a new `@protected-area` color in `#008000` instead of just using "green"
Changed protected area text to `@protected-area` color instead of park color

admin.mss

@@ -233,7 +233,7 @@ overlapping borders correctly.
 #protected-areas-text[zoom >= 13][way_pixels > 192000] {
   text-name: "[name]";
   text-face-name: @book-fonts;
-  text-fill: green;
+  text-fill: @protected-area;
   [boundary='aboriginal_lands'],
   [boundary='protected_area'][protect_class='24'] {
     text-fill: @aboriginal;
@@ -253,25 +253,15 @@ overlapping borders correctly.
 #protected-areas {
   [way_pixels > 750] {
     [zoom >= 8][zoom < 10] {
-      ::fill {
-        opacity: 0.05;
-        polygon-fill: green;
-        [boundary='aboriginal_lands'],
-        [boundary='protected_area'][protect_class='24'] {
-          polygon-fill: @aboriginal;
-        }
+      opacity: 0.25;
+      line-width: 1.2;
+      line-color: @protected-area;
+      [boundary='aboriginal_lands'],
+      [boundary='protected_area'][protect_class='24'] {
+        line-color: @aboriginal;
       }
-      ::outline {
-        opacity: 0.25;
-        line-width: 1.2;
-        line-color: green;
-        [boundary='aboriginal_lands'],
-        [boundary='protected_area'][protect_class='24'] {
-          line-color: @aboriginal;
-        }
-        [zoom >= 9] {
-          line-width: 1.5;
-        }
+      [zoom >= 9] {
+        line-width: 1.5;
       }
     }
     [zoom >= 10] {
@@ -286,7 +276,7 @@ overlapping borders correctly.
         // also applies to inner rings of multipolygons.) So a negative
         // line-offset is always an offset to the inner side of the polygon.
         line-offset: -0.9;
-        line-color: green;
+        line-color: @protected-area;
         [boundary='aboriginal_lands'],
         [boundary='protected_area'][protect_class='24'] {
           line-color: @aboriginal;
@@ -306,7 +296,7 @@ overlapping borders correctly.
       ::narrowline {
         opacity: 0.15;
         line-width: 1.8;
-        line-color: green;
+        line-color: @protected-area;
         [boundary='aboriginal_lands'],
         [boundary='protected_area'][protect_class='24'] {
           line-color: @aboriginal;

amenity-points.mss

@@ -20,6 +20,7 @@
 @barrier-icon: #3f3f3f;
 @landform-color: #d08f55;
 @leisure-green: darken(@park, 60%);
+@protected-area: #008000;
 @aboriginal: #82643a;
 @religious-icon: #000000;
 
@@ -2070,7 +2071,7 @@
       [feature = 'boundary_national_park'],
       [feature = 'leisure_nature_reserve'],
       [feature = 'boundary_protected_area'] {
-        text-fill: darken(@park, 70%);
+        text-fill: @protected-area;
       }
     }
   }