update to core with white background

Author: rcoreilly

go.mod

@@ -3,8 +3,8 @@ module github.com/compcogneuro/web
 go 1.23.4
 
 require (
-	cogentcore.org/core v0.3.13-0.20251120091237-f86f28579137
-	cogentcore.org/lab v0.1.3-0.20251014144642-a12de9e660c7
+	cogentcore.org/core v0.3.13-0.20251122080528-7dff9fe2d85b
+	cogentcore.org/lab v0.1.3-0.20251122082523-2efc956ff003
 	github.com/cogentcore/yaegi v0.0.0-20250622201820-b7838bdd95eb
 	github.com/emer/axon/v2 v2.0.0-dev0.2.73
 	github.com/emer/emergent/v2 v2.0.0-dev0.1.7.0.20251017224053-7004cc176576

go.sum

@@ -1,7 +1,7 @@
-cogentcore.org/core v0.3.13-0.20251120091237-f86f28579137 h1:VYM0CQuIIC2ElBVNt4qokCI+rLNu6M7/ONRU12pMJwE=
-cogentcore.org/core v0.3.13-0.20251120091237-f86f28579137/go.mod h1:eDHnTCy1sBhAKN9NPsSCnBW3VAnwQBNA9nbGMo9r+Xs=
-cogentcore.org/lab v0.1.3-0.20251014144642-a12de9e660c7 h1:il1qQnBsNNZEEuxtCgvbczAbuefo7vriDtL3DQRsHkQ=
-cogentcore.org/lab v0.1.3-0.20251014144642-a12de9e660c7/go.mod h1:0fJ6n1CfFj1ijpUq6zCx9UsQpx5lBMkDsVEmnCy238A=
+cogentcore.org/core v0.3.13-0.20251122080528-7dff9fe2d85b h1:YF5zD4OoObOKKI2C8atfgJ3giEw1ySTOCqxpUq3OyZs=
+cogentcore.org/core v0.3.13-0.20251122080528-7dff9fe2d85b/go.mod h1:eDHnTCy1sBhAKN9NPsSCnBW3VAnwQBNA9nbGMo9r+Xs=
+cogentcore.org/lab v0.1.3-0.20251122082523-2efc956ff003 h1:i0HGn83JkqKop7CQLpvUwfH6ennJRrE2gzgC99cGyjg=
+cogentcore.org/lab v0.1.3-0.20251122082523-2efc956ff003/go.mod h1:Bofm3asYeq4NdKl5STMFSpZh/PBWoK5S0gjS9OZfD9c=
 github.com/Bios-Marcel/wastebasket/v2 v2.0.3 h1:TkoDPcSqluhLGE+EssHu7UGmLgUEkWg7kNyHyyJ3Q9g=
 github.com/Bios-Marcel/wastebasket/v2 v2.0.3/go.mod h1:769oPCv6eH7ugl90DYIsWwjZh4hgNmMS3Zuhe1bH6KU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=