minor style improvements

src/group.typ

@@ -1,4 +1,5 @@
 #import "@preview/cetz:0.2.2": draw
+#import "consts.typ": *
 
 #let _grp(name, desc: none, type: "default", elmts) = {
   return ((
@@ -12,7 +13,8 @@
 
 #let render(x0, x1, y0, y1, group) = {
   let shapes = ()
-  let m = measure(box(group.name))
+  let name = text(group.name, weight: "bold")
+  let m = measure(box(name))
   let w = m.width / 1pt + 15
   let h = m.height / 1pt + 6
   shapes += draw.rect(
@@ -20,7 +22,7 @@
     (x1, y1)
   )
   shapes += draw.merge-path(
-    fill: gray.lighten(20%),
+    fill: COL-GRP-NAME,
     close: true,
     {
       draw.line(
@@ -34,7 +36,7 @@
   )
   shapes += draw.content(
     (x0, y0),
-    group.name,
+    name,
     anchor: "north-west",
     padding: (left: 5pt, right: 10pt, top: 3pt, bottom: 3pt)
   )