fixed?

.atom/packages/atom-material-ui/styles/title-bar.less

@@ -1,19 +0,0 @@
-.title-bar {
-    background: @app-background-color;
-    border-bottom: none;
-    color: @text-color;
-    font-size: @font-size;
-
-    .amu-panel-contrast & {
-        background: darken(@app-background-color, 2%);
-    }
-
-    .amu-tinted-tab-bar & {
-        background: @base-color;
-        color: @accent-text-color;
-    }
-
-    .amu-panel-contrast.amu-tinted-tab-bar & {
-        background: darken(@base-color, 5%);
-    }
-}