Merge #1544

1544: Highlight mutable variables differently r=matklad a=viorina

![Screenshot from 2019-07-18 19-04-57](https://user-images.githubusercontent.com/6714973/61473539-3f5d3000-a98f-11e9-99ec-a4115b2ba66b.png)


Co-authored-by: Ekaterina Babshukova <[email protected]>

2 files changed, 10 insertions, 0 deletions

diff --git a/editors/code/package.json b/editors/code/package.json
index 052f0b3b3..86076753b 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -433,6 +433,15 @@
                 }
             },
             {
+                "id": "ralsp.variable.mut",
+                "description": "Color for mutable variables",
+                "defaults": {
+                    "dark": "#4e65c9",
+                    "light": "#263199",
+                    "highContrast": "#4e65c9"
+                }
+            },
+            {
                 "id": "ralsp.module",
                 "description": "Color for modules",
                 "defaults": {
diff --git a/editors/code/src/highlighting.ts b/editors/code/src/highlighting.ts
index 52a0bd4bb..f3ed66365 100644
--- a/editors/code/src/highlighting.ts
+++ b/editors/code/src/highlighting.ts
@@ -56,6 +56,7 @@ export class Highlighter {
             colorContrib('literal'),
             colorContrib('macro'),
             colorContrib('variable'),
+            colorContrib('variable.mut'),
             colorContrib('field'),
             colorContrib('module')
         ];