diff --git a/app/services/experiments/generate_workflow_image_service.rb b/app/services/experiments/generate_workflow_image_service.rb
index 8d79e76e4..071607f7e 100644
--- a/app/services/experiments/generate_workflow_image_service.rb
+++ b/app/services/experiments/generate_workflow_image_service.rb
@@ -14,7 +14,7 @@ module Experiments
       @graph[:size] = '4,4'
       @graph.node[color: Constants::COLOR_ALTO,
                   style: :filled,
-                  fontcolor: Constants::COLOR_EMPEROR,
+                  fontcolor: Constants::COLOR_VOLCANO,
                   shape: 'circle',
                   fontname: 'Arial',
                   fontsize: '16.0']
diff --git a/config/initializers/constants.rb b/config/initializers/constants.rb
index 62bbc50cc..7cfaed03e 100644
--- a/config/initializers/constants.rb
+++ b/config/initializers/constants.rb
@@ -184,21 +184,18 @@ class Constants
   ].freeze
 
   # Theme colors
-  BRAND_PRIMARY = '#37a0d9'.freeze # $brand-primary
-  BRAND_DEFAULT = '#8fd13f'.freeze # $brand-default
+  BRAND_PRIMARY = '#104da9'.freeze # $brand-primary
 
   # Grayscale colors
   COLOR_WHITE = '#ffffff'.freeze # $color-white
-  COLOR_ALABASTER = '#fcfcfc'.freeze # $color-alabaster
-  COLOR_CONCRETE = '#f2f2f2'.freeze # $color-concrete
-  COLOR_GAINSBORO = '#e3e3e3'.freeze # $color-gainsboro
-  COLOR_ALTO = '#d2d2d2'.freeze # $color-alto
-  COLOR_SILVER = '#c5c5c5'.freeze # $color-silver
-  COLOR_SILVER_CHALICE = '#a0a0a0'.freeze # $color-silver-chalice
-  COLOR_DOVE_GRAY = '#666666'.freeze # $color-dove-gray
-  COLOR_EMPEROR = '#555555'.freeze # $color-emperor
-  COLOR_BLACK = '#000000'.freeze # $color-black
+  COLOR_CONCRETE = '#f0f0f6'.freeze # $color-concrete
+  COLOR_ALTO = '#d0d0d8'.freeze # $color-alto
+  COLOR_SILVER_CHALICE = '#a0a0a8'.freeze # $color-silver-chalice
+  COLOR_VOLCANO = '#404048'.freeze # $color-volcano
+  COLOR_BLACK = '#231f20'.freeze # $color-black
 
+  # Fonts
+  FONT_FAMILY_BASE = 'Lato,"Open Sans",Arial,Helvetica,sans-serif;'.freeze # $font-family-base
 
   #=============================================================================
   # External URLs