gterm: Default to transparent bg if wallpaper is set

common/lib/gterm.c

@@ -735,6 +735,10 @@ bool gterm_init(size_t *_rows, size_t *_cols, size_t width, size_t height) {
     if (background == NULL) {
         margin = 0;
         margin_gradient = 0;
+    } else {
+        if (theme_background == NULL) {
+            default_bg = 0x68000000;
+        }
     }
 
     char *theme_margin = config_get_value(NULL, 0, "THEME_MARGIN");

test/limine.cfg

@@ -5,8 +5,6 @@ DEFAULT_ENTRY=1
 TIMEOUT=3
 VERBOSE=yes
 
-THEME_BACKGROUND=68000000
-
 BACKGROUND_PATH=${BACKGROUND_PATH}
 BACKGROUND_STYLE=stretched
 BACKDROP_COLOUR=008080