diff --git a/qhtcp-workflow/apps/r/calculate_interaction_zscores.R b/qhtcp-workflow/apps/r/calculate_interaction_zscores.R
index 590e18b6..e954e215 100644
--- a/qhtcp-workflow/apps/r/calculate_interaction_zscores.R
+++ b/qhtcp-workflow/apps/r/calculate_interaction_zscores.R
@@ -661,7 +661,8 @@ generate_and_save_plots <- function(out_dir, filename, plot_configs, page_width
               ymin = .data[[y_mean_col]] - .data[[y_sd_col]],
               ymax = .data[[y_mean_col]] + .data[[y_sd_col]],
               color = .data[[config$color_var]]
-            )
+            ),
+            linewidth = 0.1
           )
         } else {
           # If a fixed error bar color is set, use it outside aes
@@ -671,18 +672,32 @@ generate_and_save_plots <- function(out_dir, filename, plot_configs, page_width
               ymin = .data[[y_mean_col]] - .data[[y_sd_col]],
               ymax = .data[[y_mean_col]] + .data[[y_sd_col]]
             ),
-            color = config$error_bar_params$color
+            color = config$error_bar_params$color,
+            linewidth = 0.1
           )
         }
 
         # Add the center point if the option is provided
-        if (!is.null(config$error_bar_params$center_point)) {
-          plot <- plot + geom_point(aes(
-            x = .data[[config$x_var]],
-            y = .data[[y_mean_col]]),
-            color = config$error_bar_params$color,
-            shape = 16
-          )
+        if (!is.null(config$error_bar_params$mean_point) && config$error_bar_params$mean_point) {
+          if (!is.null(config$color_var) && is.null(config$error_bar_params$color)) {
+            plot <- plot + geom_point(
+              aes(
+                x = .data[[config$x_var]],
+                y = .data[[y_mean_col]],
+                color = .data[[config$color_var]]
+              ),
+              shape = 16
+            )
+          } else {
+            plot <- plot + geom_point(
+              aes(
+                x = .data[[config$x_var]],
+                y = .data[[y_mean_col]]
+              ),
+              color = config$error_bar_params$color,
+              shape = 16
+            )
+          }
         }
       }
 
@@ -946,7 +961,7 @@ generate_interaction_plot_configs <- function(df_summary, df_interaction, type)
         plot_config$error_bar <- TRUE
         plot_config$error_bar_params <- list(
           color = "red",
-          center_point = TRUE,
+          mean_point = TRUE,
           y_mean_col = paste0("mean_mean_", var),
           y_sd_col = paste0("mean_sd_", var)
         )