themes: make tab title readable based on theme default colors

data/themes/default.edc

@@ -1,6 +1,9 @@
 #ifndef NO_COLORS
 color_classes {
-#define BG_COLOR  32 32 32 255
+#define BG_COLOR_NO_ALPHA  32 32 32
+#define BG_COLOR  BG_COLOR_NO_ALPHA 255
+#define FG_COLOR_NO_ALPHA  170 170 170
+#define FG_COLOR  FG_COLOR_NO_ALPHA 255
 #include "default_colors.in.edc"
 }
 #endif
@@ -1392,8 +1395,8 @@ collections {
             scale: 1;
             effect: SOFT_SHADOW BOTTOM;
             description { state: "default" 0.0;
-               color: 255 255 255 255;
-               color3: 0 0 0 18;
+               color: FG_COLOR_NO_ALPHA 255;
+               color3: BG_COLOR_NO_ALPHA 18;
                text { font: "Sans:style=Bold"; size: 10;
                   align: 0.5 0.5;
                   min: 0 1;
@@ -2113,15 +2116,15 @@ collections {
          }
          part { name: "terminology.title"; type: TEXT; mouse_events: 0;
             scale: 1;
-            effect: SHADOW BOTTOM;
+            effect: GLOW;
             description { state: "default" 0.0;
                text { font: "Sans:style=Bold"; size: 10;
                   align: 0.5 0.5;
                   min: 0 1;
                }
                align: 0.5 0.5;
-               color: 0 0 0 255;
-               color3: 255 255 255 25;
+               color: 180 180 180 255;
+               color3: 0 0 0 18;
                rel1.to: "tab_bevel_top2";
                rel2.to: "tab_bevel_top2";
             }

data/themes/nord.edc

@@ -39,7 +39,10 @@
 #define ANSI15    nord6
 
 #define COL_DEF   nord4
-#define BG_COLOR  nord0
+#define BG_COLOR_NO_ALPHA  46  52  64
+#define BG_COLOR  BG_COLOR_NO_ALPHA 255
+#define FG_COLOR_NO_ALPHA  216 222 233
+#define FG_COLOR  FG_COLOR_NO_ALPHA 255
 #define NO_COLORS 1
 
 color_classes {

data/themes/papercolor.edc

@@ -20,6 +20,10 @@
 
 #define COL_DEF    68  68  68 255 /* #444444 */
 #define BG_COLOR  238 238 238 255 /* #EEEEEE */
+#define BG_COLOR_NO_ALPHA  238 238 238 /* #EEEEEE */
+#define BG_COLOR  BG_COLOR_NO_ALPHA 255
+#define FG_COLOR_NO_ALPHA  68 68 68 /* #444444 */
+#define FG_COLOR  FG_COLOR_NO_ALPHA 255
 #define NO_COLORS 1
 
 color_classes {

data/themes/solarized.edc

@@ -16,6 +16,10 @@
 #define S_base3   253 246 227 255
 
 #define BG_COLOR  S_base03
+#define BG_COLOR_NO_ALPHA  0 43 54
+#define BG_COLOR  BG_COLOR_NO_ALPHA 255
+#define FG_COLOR_NO_ALPHA  253 246 227
+#define FG_COLOR  FG_COLOR_NO_ALPHA 255
 #define NO_COLORS 1
 
 color_classes {

data/themes/solarized_light.edc

@@ -16,6 +16,10 @@
 #define S_base3     0  43  54 255
 
 #define BG_COLOR  S_base03
+#define BG_COLOR_NO_ALPHA  253 246 227
+#define BG_COLOR  BG_COLOR_NO_ALPHA 255
+#define FG_COLOR_NO_ALPHA  0 43 54
+#define FG_COLOR  FG_COLOR_NO_ALPHA 255
 #define NO_COLORS 1
 
 color_classes {