fix(plugins/plugin-patternfly4-themes): darken status stripe

Fixes #4402

Author: starpit

plugins/plugin-patternfly4-themes/web/scss/patternfly4-light.scss

@@ -39,7 +39,7 @@ body[kui-theme='PatternFly4 Light'] {
     --color-base00: var(--pf-global--palette--black-1000);
     --color-base01: var(--pf-global--palette--black-900);
     --color-base02: var(--pf-global--palette--black-800);
-    --color-base03: var(--pf-global--palette--black-800);
+    --color-base03: var(--pf-global--palette--black-850);
     --color-base04: var(--pf-global--palette--black-400);
     --color-base05: var(--pf-global--palette--black-200);
     --color-base06: var(--pf-global--palette--black-150);