diff --git a/assets/css/lesson.scss b/assets/css/lesson.scss
index cd792674b0616dea18c3a5f382951fc4d021ef20..b094d2bc64a0ebec6c9a71b56a22709c1ca9f902 100644
--- a/assets/css/lesson.scss
+++ b/assets/css/lesson.scss
@@ -14,7 +14,8 @@ $color-output:      #303030 !default;
 $color-source:      #6e5494 !default;
 
 // blockquotes
-{% if carpentry == "swc" %}
+
+{% if site.carpentry == "swc" %}
 $color-callout:     #00B3A3 !default;
 $color-challenge:   #cf0039 !default;
 $color-checklist:   #ea7f6a !default;
@@ -25,6 +26,17 @@ $color-solution:    #9a7366 !default;
 $color-testimonial: #d99600 !default;
 {% endif %}
 
+{% if site.carpentry == "dc" %}
+$color-callout:     #c4e177 !default;
+$color-challenge:   #f4b4aa !default;
+$color-checklist:   #5ac76e !default;
+$color-keypoints:   #ae9aca !default;
+$color-objectives:  #cf71a9 !default;
+$color-prereq:      #9cd6dc !default;
+$color-solution:    #e3bb70 !default;
+$color-testimonial: #f4fd9c !default;
+{% endif %}
+
 //----------------------------------------
 // Specialized code blocks.
 //----------------------------------------
diff --git a/files/spring.jpg b/files/spring.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..948fb531e1f8a11d9fee9faab097cd10d38840fa
Binary files /dev/null and b/files/spring.jpg differ