diff --git a/aluminum/plugin.go b/aluminum/plugin.go
index d6ce361..030491c 100644
--- a/aluminum/plugin.go
+++ b/aluminum/plugin.go
@@ -5,7 +5,7 @@ import "git.tebibyte.media/tomo/aluminum"
 import "git.tebibyte.media/tomo/tomo/theme"
 
 func init () {
-	theme.SetTheme(aluminum.Theme { })
+	theme.SetTheme(new(aluminum.Theme))
 }
 
 func Name () string {
diff --git a/theme.go b/theme.go
index da5761e..fa9ec70 100644
--- a/theme.go
+++ b/theme.go
@@ -4,6 +4,7 @@ import "image"
 import "image/color"
 import "git.tebibyte.media/tomo/tomo"
 import "golang.org/x/image/font/basicfont"
+import "git.tebibyte.media/tomo/tomo/data"
 import "git.tebibyte.media/tomo/tomo/theme"
 import "git.tebibyte.media/tomo/tomo/input"
 import "git.tebibyte.media/tomo/tomo/event"
@@ -46,7 +47,7 @@ var gutterColorHovered = hex(0xc5cbd6FF)
 
 type Theme struct { }
 
-func (Theme) RGBA (id theme.Color) (r, g, b, a uint32) {
+func (this *Theme) RGBA (id theme.Color) (r, g, b, a uint32) {
 	switch id {
 	case theme.ColorBackground: return backgroundColor  .RGBA()
 	case theme.ColorForeground: return textColor        .RGBA()
@@ -57,7 +58,7 @@ func (Theme) RGBA (id theme.Color) (r, g, b, a uint32) {
 	}
 }
 
-func (Theme) Apply (object tomo.Object, role theme.Role) event.Cookie {
+func (this *Theme) Apply (object tomo.Object, role theme.Role) event.Cookie {
 	box := object.GetBox()
 	box.SetColor(backgroundColor)
 
@@ -216,3 +217,25 @@ func (Theme) Apply (object tomo.Object, role theme.Role) event.Cookie {
 	}
 	return event.MultiCookie()
 }
+
+func (this *Theme) Icon (theme.Icon, theme.IconSize) tomo.Texture {
+	this.ensure()
+	// TODO
+	return nil
+}
+
+func (this *Theme) MimeIcon (data.Mime, theme.IconSize) tomo.Texture {
+	this.ensure()
+	// TODO
+	return nil
+}
+
+func (this *Theme) ApplicationIcon (theme.ApplicationIcon, theme.IconSize) tomo.Texture {
+	this.ensure()
+	// TODO
+	return nil
+}
+
+func (this *Theme) ensure () {
+	// TODO
+}