Fixed text not visible at white swimlane at themes dark and exodark.

Commented out not in use font Poppins.
Custom fonts were previously removed because they did not work,
there were errors at browser inspect console.

Thanks to  Meeques and xet7 !

Fixes #4451

client/components/boards/boardColors.css

@@ -782,9 +782,11 @@
   background-color: rgba(255,255,255,0.3) !important;
 }
 .board-color-dark .list >.list-header,
+/* Comment out, fixed white swimlane text not visible https://github.com/wekan/wekan/issues/4451
 .board-color-dark .swimlane-header {
   color: rgba(255,255,255,0.7);
 }
+*/
 .board-color-dark .minicard-wrapper.is-selected .minicard,
 .board-color-dark .minicard:hover,
 .board-color-dark .minicard-composer.js-composer,
@@ -1403,7 +1405,7 @@
   background: rgba(255,255,255,0.2);
 }
 .board-color-modern#header #header-main-bar h1 {
-  font-family: Poppins;
+/*  font-family: Poppins; */
   font-weight: bold;
 }
 .board-color-modern#header-quick-access #header-user-bar {
@@ -1430,13 +1432,13 @@
   background: none;
 }
 .board-color-modern .swimlane .swimlane-header-wrap .swimlane-header {
-  font-family: Poppins;
+  /* font-family: Poppins; */
 }
 .board-color-modern .board-list .board-list-item {
   padding: 20px;
 }
 .board-color-modern .board-list-item-name {
-  font-family: Poppins;
+  /* font-family: Poppins; */
 }
 .board-color-modern .list {
   background: transparent;
@@ -1464,7 +1466,7 @@
   background: none;
 }
 .board-color-modern .list-header .list-header-name {
-  font-family: Poppins;
+  /* font-family: Poppins; */
   color: #000;
   font-weight: 500;
 }
@@ -1493,7 +1495,7 @@
   padding: 3px 5px;
 }
 .board-color-modern .header-title {
-  font-family: Poppins;
+  /* font-family: Poppins; */
   font-size: 16px;
   color: #333;
 }
@@ -1509,7 +1511,7 @@
   background: #eee;
 }
 .board-color-modern .pop-over .header .header-title {
-  font-family: Poppins;
+  /* font-family: Poppins; */
   font-size: 16px;
   color: #333;
 }
@@ -1547,7 +1549,7 @@
   background: #eee;
 }
 .board-color-modern .board-color-modern section#notifications-drawer .header h5 {
-  font-family: Poppins;
+  /* font-family: Poppins; */
   font-weight: bold;
 }
 .board-color-modern .board-color-modern section#notifications-drawer .header .close {
@@ -1702,7 +1704,7 @@
   background: rgba(255,255,255,0.2);
 }
 .board-color-moderndark#header #header-main-bar h1 {
-  font-family: Poppins;
+  /* font-family: Poppins; */
   font-weight: bold;
   line-height: 0.8em;
   padding-top: 10px;
@@ -1716,7 +1718,7 @@
   padding: 4px 0;
 }
 .board-color-moderndark .swimlane .swimlane-header-wrap .swimlane-header {
-  font-family: Poppins;
+  /* font-family: Poppins; */
 }
 .board-color-moderndark .swimlane .swimlane-header-wrap .swimlane-header-menu {
   padding: 6px;
@@ -1963,7 +1965,7 @@
   background-color: #333;
 }
 .pop-over.board-color-moderndark .header-title {
-  font-family: Poppins;
+  /* font-family: Poppins; */
   font-size: 16px;
   color: #ccc;
 }
@@ -2045,12 +2047,14 @@
 .board-color-exodark body {
   background: #222;
 }
+/* Uncomment to fix change color selected checkmark not visible
 .board-color-exodark i {
-  color: #00897b !important;
+  color: #fff !important;
 }
+*/
 .board-color-exodark .board-canvas {
   background: #222;
-  font-family: Poppins;
+  /* font-family: Poppins; */
 }
 .board-color-exodark .swimlane {
   background: #222;
@@ -2147,9 +2151,12 @@
 .board-color-exodark h4,
 .board-color-exodark h5,
 .board-color-exodark h6,
-.board-color-exodark p,
-.board-color-exodark a,
-.board-color-exodark span {
+/* Below added .card-details > to p/a/span to fix white swimlane text not visible
+   https://github.com/wekan/wekan/issues/4451
+*/
+.board-color-exodark .card-details > p,
+.board-color-exodark .card-details > a,
+.board-color-exodark .card-details > span {
   color: #fff !important;
 }
 .board-color-exodark .activity-desc {
@@ -2164,7 +2171,7 @@
   border: 1px solid #00897b;
 }
 .board-color-exodark .toggle-switch:checked ~ .toggle-label {
-  background-color: #00897b !important;
+  background-color: #fff !important;
 }
 .pop-over.board-color-exodark {
   background: #2b2b2b;

client/components/cards/cardDetails.css

@@ -337,7 +337,7 @@ input[type="submit"].attachment-add-link-submit {
   }
 }
 .card-details-white {
-  background: unset !important;
+  background: #fff !important;
   color: #000 !important;
   border: 1px solid #eee;
 }