diff --git a/src/files.jl b/src/files.jl
index 80dc877957a2f2e8e09be62d6b1793e582a4f813..022ea3ebd469d2b505d06125adc1f7705d1fc359 100644
--- a/src/files.jl
+++ b/src/files.jl
@@ -118,20 +118,42 @@ function tryopenfile(controller, path; reload::Bool=false)
             push!(tag_lut, ObservableTag(original; color=color, active=true))
         end
     elseif hasproperty(records, :tags)
+        # trx.mat tags
         default_convention = Dict(
-                                  :small_motion => :grey50,
-                                  :stop_large => :green,
-                                  :run_large => :black,
+                                  :back_large => :cyan,
                                   :cast_large => :red,
                                   :hunch_large => :blue,
-                                  :back_large => :cyan,
                                   :roll_large => :yellow,
+                                  :run_large => :black,
+                                  :small_motion => :grey50,
+                                  :stop_large => :green,
                                  )
+        related_tags = Dict(
+                            :back => :back_large,
+                            :back_weak => :back_large,
+                            :back_strong => :back_large,
+                            :cast => :cast_large,
+                            :cast_weak => :cast_large,
+                            :cast_strong => :cast_large,
+                            :hunch => :hunch_large,
+                            :hunch_weak => :hunch_large,
+                            :hunch_strong => :hunch_large,
+                            :roll => :roll_large,
+                            :roll_weak => :roll_large,
+                            :roll_strong => :roll_large,
+                            :run => :run_large,
+                            :run_weak => :run_large,
+                            :run_strong => :run_large,
+                            :stop => :stop_large,
+                            :stop_weak => :stop_large,
+                            :stop_strong => :stop_large,
+                           )
         fallback_color = theme[:LarvaPlot][:fallback_color]
         existingtags = records.tags
         for tag in existingtags
             active = tag in keys(default_convention)
-            color = active ? default_convention[tag] : fallback_color
+            tag′= active ? tag : get(related_tags, tag, tag)
+            color = get(default_convention, tag′, fallback_color)
             original = TagModel(tag)
             push!(tag_lut, ObservableTag(original; color=color, active=active))
         end