fix colors

If you filter the ELO, the colors will switch between open and proprietary. I think this is due to invalid color map and the filtered df switching which license comes first.

It looks like the actual labels need to include LLM: https://huggingface.co/spaces/andrewrreed/closed-vs-open-arena-elo/blob/b0f78b68f80d00bf413405d6533be89d36f88ca6/utils.py#L194

With this, the colors for open should always be the same no matter how filtered.

app.py

@@ -157,7 +157,7 @@ def filter_df(min_score, max_models_per_month, set_selector, org_selector):
 def build_plot(toggle_annotations, filtered_df):
 
     # construct plot
-    custom_colors = {"Open": "#ff7f0e", "Proprietary": "#1f77b4"}
+    custom_colors = {"Open LLM": "#ff7f0e", "Proprietary LLM": "#1f77b4"}
     fig = px.scatter(
         filtered_df,
         x="Release Date",