diff --git a/assets/css/tabs.scss b/assets/css/tabs.scss
index 489341fa28..c1b84be604 100644
--- a/assets/css/tabs.scss
+++ b/assets/css/tabs.scss
@@ -50,8 +50,7 @@ table td, table th {
 }
 
 .grid-container > div {
-    /* White, with 80% opacity */
-    background-color: rgba(255, 255, 255, 0.8);
+    background-color: var(--pst-color-background);
     text-align: middle;
 }
 
@@ -73,8 +72,8 @@ table td, table th {
 }
 
 .image-grid > div {
-    background-color: rgb(238, 238, 238);
-    border: 2px solid rgb(255, 255, 255);
+    background-color: var(--pst-color-surface);
+    border: 2px solid var(--pst-color-surface);
     border-radius: 10px;
     padding: 10px;
 }
@@ -99,7 +98,7 @@ section.scientific-domains {
 
             & header {
                 // FIXME: Use appropriate PST color for this header text.
-                color: var(--colorPrimaryDark);
+                color: var(--pst-color-text-base);
                 font-weight: 700;
                 // Ensure headers are the same minimum height (some wrap
                 // to two lines).
diff --git a/static/images/content_images/sc_dom_img/sd6.svg b/static/images/content_images/sc_dom_img/sd6.svg
index 3a975bd1ea..cee7b82839 100644
--- a/static/images/content_images/sc_dom_img/sd6.svg
+++ b/static/images/content_images/sc_dom_img/sd6.svg
@@ -1,21 +1 @@
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-<path d="M80.0005 64.9185C82.9106 64.9185 85.7036 63.7622 87.7661 61.7036C89.8247 59.645 90.9809 56.8521 90.9809 53.938C90.9809 51.0279 89.8247 48.2349 87.7661 46.1763C85.7036 44.1177 82.9106 42.9615 80.0005 42.9615C77.0903 42.9615 74.2973 44.1177 72.2348 46.1763C70.1762 48.2349 69.02 51.0279 69.02 53.938C69.02 56.8521 70.1762 59.645 72.2348 61.7036C74.2973 63.7622 77.0903 64.9185 80.0005 64.9185Z" fill="white" stroke="#013243" stroke-width="9.99999" stroke-linejoin="round"/>
-<path d="M140.606 107.344C143.52 107.344 146.313 106.188 148.372 104.129C150.43 102.071 151.586 99.2778 151.586 96.3638C151.586 93.4536 150.43 90.6606 148.372 88.5981C146.313 86.5396 143.52 85.3833 140.606 85.3833C137.696 85.3833 134.903 86.5396 132.844 88.5981C130.782 90.6606 129.625 93.4536 129.625 96.3638C129.625 99.2778 130.782 102.071 132.844 104.129C134.903 106.188 137.696 107.344 140.606 107.344Z" fill="white" stroke="#013243" stroke-width="9.99999" stroke-linejoin="round"/>
-<path d="M120.403 39.1606C123.317 39.1606 126.11 38.0044 128.168 35.9458C130.227 33.8872 131.383 31.0942 131.383 28.1841C131.383 25.27 130.227 22.477 128.168 20.4185C126.11 18.3599 123.317 17.2036 120.403 17.2036C117.493 17.2036 114.7 18.3599 112.641 20.4185C110.582 22.477 109.426 25.27 109.426 28.1841C109.426 31.0942 110.582 33.8872 112.641 35.9458C114.7 38.0044 117.493 39.1606 120.403 39.1606Z" fill="white" stroke="#013243" stroke-width="9.99999" stroke-linejoin="round"/>
-</g>
-<defs>
-<clipPath id="clip0_1_47">
-<rect width="160" height="120" fill="white"/>
-</clipPath>
-</defs>
-</svg>
+<svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" width="160" height="120" viewBox="0 0 160 120" fill="none" id="svg33" sodipodi:docname="sd6.svg" inkscape:version="1.0.2 (e86c870879, 2021-01-15)"><sodipodi:namedview pagecolor="#ffffff" bordercolor="#666666" borderopacity="1" objecttolerance="10" gridtolerance="10" guidetolerance="10" inkscape:pageopacity="0" inkscape:pageshadow="2" inkscape:window-width="1920" inkscape:window-height="1154" id="namedview35" showgrid="false" inkscape:zoom="5.6666667" inkscape:cx="80" inkscape:cy="60" inkscape:window-x="1920" inkscape:window-y="22" inkscape:window-maximized="1" inkscape:current-layer="svg33"/><g id="g909"><path d="M37.2153 94.7348c-5.1485-23.1563-10.293-46.3125-15.4375-69.4726" stroke="#013243" stroke-width="9.99999" stroke-linecap="round" stroke-linejoin="round" id="path4"/><path d="M46.3715 96.8168c8.9531-11.414 17.9023-22.8242 26.8516-34.2382" stroke="#013243" stroke-width="9.99999" stroke-linecap="round" stroke-linejoin="round" id="path6"/><path d="m50.5317 104.469c26.3789-2.371 52.7573-4.7459 79.1363-7.1209" stroke="#013243" stroke-width="9.99999" stroke-linecap="round" stroke-linejoin="round" id="path8"/><path d="m28.602 20.5317c14.0625 9.1406 28.1289 18.2812 42.1914 27.4219" stroke="#013243" stroke-width="9.99999" stroke-linecap="round" stroke-linejoin="round" id="path10"/><path d="M89.2582 48.0356C96.5551 43.3872 103.852 38.7348 111.145 34.0864" stroke="#013243" stroke-width="9.99999" stroke-linecap="round" stroke-linejoin="round" id="path12"/><path d="M137.489 85.8364C132.832 70.1293 128.18 54.4184 123.524 38.7114" stroke="#013243" stroke-width="9.99999" stroke-linecap="round" stroke-linejoin="round" id="path14"/><path d="m39.5981 116.434c2.9102.0 5.7031-1.156 7.7617-3.215 2.0586-2.058 3.2149-4.851 3.2149-7.765.0-2.911-1.1563-5.7035-3.2149-7.7621s-4.8515-3.2188-7.7617-3.2188c-2.9141.0-5.707 1.1602-7.7656 3.2188s-3.2149 4.8511-3.2149 7.7621c0 2.914 1.1563 5.707 3.2149 7.765 2.0586 2.059 4.8515 3.215 7.7656 3.215z" fill="#fff" stroke="#013243" stroke-width="9.99999" stroke-linejoin="round" id="path16" style="fill:none"/><path d="m19.395 25.5278c2.9101.0 5.7031-1.1601 7.7617-3.2187 2.0625-2.0586 3.2187-4.8516 3.2187-7.7617.0-2.9141-1.1562-5.70707-3.2187-7.76566-2.0586-2.0586-4.8516-3.21485-7.7617-3.21485-2.9141.0-5.707 1.15625-7.7656 3.21485-2.05863 2.05859-3.21488 4.85156-3.21488 7.76566.0 2.9101 1.15625 5.7031 3.21488 7.7617 2.0586 2.0586 4.8515 3.2187 7.7656 3.2187z" fill="#fff" stroke="#013243" stroke-width="9.99999" stroke-linejoin="round" id="path18" style="fill:none"/><path d="m80.0005 64.9185c2.9101.0 5.7031-1.1563 7.7656-3.2149 2.0586-2.0586 3.2148-4.8515 3.2148-7.7656.0-2.9101-1.1562-5.7031-3.2148-7.7617-2.0625-2.0586-4.8555-3.2148-7.7656-3.2148-2.9102.0-5.7032 1.1562-7.7657 3.2148-2.0586 2.0586-3.2148 4.8516-3.2148 7.7617.0 2.9141 1.1562 5.707 3.2148 7.7656 2.0625 2.0586 4.8555 3.2149 7.7657 3.2149z" fill="#fff" stroke="#013243" stroke-width="9.99999" stroke-linejoin="round" id="path20" style="fill:none"/><path d="m140.606 107.344c2.914.0 5.707-1.156 7.766-3.215 2.058-2.058 3.214-4.8512 3.214-7.7652.0-2.9102-1.156-5.7032-3.214-7.7657-2.059-2.0585-4.852-3.2148-7.766-3.2148-2.91.0-5.703 1.1563-7.762 3.2148-2.062 2.0625-3.219 4.8555-3.219 7.7657.0 2.914 1.157 5.7072 3.219 7.7652 2.059 2.059 4.852 3.215 7.762 3.215z" fill="#fff" stroke="#013243" stroke-width="9.99999" stroke-linejoin="round" id="path22" style="fill:none"/><path d="m120.403 39.1606c2.914.0 5.707-1.1562 7.765-3.2148 2.059-2.0586 3.215-4.8516 3.215-7.7617.0-2.9141-1.156-5.7071-3.215-7.7656-2.058-2.0586-4.851-3.2149-7.765-3.2149-2.91.0-5.703 1.1563-7.762 3.2149-2.059 2.0585-3.215 4.8515-3.215 7.7656.0 2.9101 1.156 5.7031 3.215 7.7617s4.852 3.2148 7.762 3.2148z" fill="#fff" stroke="#013243" stroke-width="9.99999" stroke-linejoin="round" id="path24" style="fill:none"/></g><defs id="defs31"/></svg>
\ No newline at end of file