Fix label colours for ColorPicker components

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -438,9 +438,16 @@ select, .dropdown { background: white !important; color: #3D2E1E !important; }
 [data-testid="image"] button, [data-testid="image"] .toolbar { background: transparent !important; border: none !important; box-shadow: none !important; color: #8A7660 !important; }
 
 /* ─── Labels ─── */
+.gradio-container {
+    --block-label-text-color: #3D2E1E !important;
+    --block-title-text-color: #3D2E1E !important;
+    --body-text-color: #3D2E1E !important;
+    --body-text-color-subdued: #3D2E1E !important;
+}
 label > span, fieldset > span, [data-testid="radio-group"] > span, .container > span:first-child,
 [data-testid="color-picker"] label, [data-testid="color-picker"] span,
-.gradio-container label span, .block label span {
+span[data-testid="block-info"],
+.gradio-container label, .gradio-container label span, .block label, .block label span {
     font-size: .65rem !important; font-weight: 700 !important;
     letter-spacing: .14em !important; text-transform: uppercase !important;
     color: #3D2E1E !important;

theme.py

@@ -73,7 +73,7 @@ class Philatelist(Base):
         super().set(
             # ── Canvas ──
             body_background_fill="*neutral_100",
-            body_text_color="*neutral_950",
+            body_text_color="#3D2E1E",
             background_fill_primary="*neutral_100",
             background_fill_secondary="*neutral_200",
 
@@ -83,8 +83,12 @@ class Philatelist(Base):
             block_border_width="0px",
             block_shadow="none",
             block_label_background_fill="*neutral_100",
-            block_label_text_color="*neutral_950",
-            block_title_text_color="*neutral_950",
+            block_label_text_color="#3D2E1E",
+            block_label_text_color_dark="#3D2E1E",
+            block_title_text_color="#3D2E1E",
+            block_title_text_color_dark="#3D2E1E",
+            body_text_color_subdued="#3D2E1E",
+            body_text_color_subdued_dark="#3D2E1E",
 
             # ── Inputs ──
             input_background_fill="white",