feat: customize gradio components with lightning colors

examples/app/components/serve/gradio/app.py

@@ -14,7 +14,7 @@
 class AnimeGANv2UI(ServeGradio):
     inputs = gr.inputs.Image(type="pil")
     outputs = gr.outputs.Image(type="pil")
-    elon = "https://upload.wikimedia.org/wikipedia/commons/3/34/Elon_Musk_Royal_Society_%28crop2%29.jpg"
+    elon = "https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Elon_Musk_Royal_Society_%28crop2%29.jpg/330px-Elon_Musk_Royal_Society_%28crop2%29.jpg"
     img = Image.open(requests.get(elon, stream=True).raw)
     img.save("elon.jpg")
     examples = [["elon.jpg"]]

src/lightning/app/CHANGELOG.md

@@ -9,7 +9,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 ### Added
 
--
+- Allow customize `gradio` components with lightning colors ([#17054](https://github.com/Lightning-AI/lightning/pull/17054))
 
 
 ### Changed

src/lightning/app/components/serve/gradio_server.py

@@ -24,6 +24,12 @@
     import gradio
 else:
     gradio = ModuleType("gradio")
+    gradio.themes = ModuleType("gradio.themes")
+
+    class __DummyBase:
+        pass
+
+    gradio.themes.Base = __DummyBase
 
 
 class ServeGradio(LightningWork, abc.ABC):
@@ -49,11 +55,12 @@ class ServeGradio(LightningWork, abc.ABC):
 
     _start_method = "spawn"
 
-    def __init__(self, *args: Any, **kwargs: Any):
+    def __init__(self, *args: Any, theme: Optional[gradio.themes.Base] = None, **kwargs: Any):
         requires("gradio")(super().__init__(*args, **kwargs))
         assert self.inputs
         assert self.outputs
         self._model = None
+        self._theme = theme or ServeGradio.__get_lightning_gradio_theme()
 
         self.ready = False
 
@@ -85,6 +92,7 @@ def run(self, *args: Any, **kwargs: Any):
             examples=self.examples,
             title=self.title,
             description=self.description,
+            theme=self._theme,
         ).launch(
             server_name=self.host,
             server_port=self.port,
@@ -93,3 +101,98 @@ def run(self, *args: Any, **kwargs: Any):
 
     def configure_layout(self) -> str:
         return self.url
+
+    @staticmethod
+    def __get_lightning_gradio_theme():
+        return gradio.themes.Default(
+            primary_hue=gradio.themes.Color(
+                "#ffffff",
+                "#e9d5ff",
+                "#d8b4fe",
+                "#c084fc",
+                "#fcfcfc",
+                "#a855f7",
+                "#9333ea",
+                "#8823e1",
+                "#6b21a8",
+                "#2c2730",
+                "#1c1c1c",
+            ),
+            secondary_hue=gradio.themes.Color(
+                "#c3a1e8",
+                "#e9d5ff",
+                "#d3bbec",
+                "#c795f9",
+                "#9174af",
+                "#a855f7",
+                "#9333ea",
+                "#6700c2",
+                "#000000",
+                "#991ef1",
+                "#33243d",
+            ),
+            neutral_hue=gradio.themes.Color(
+                "#ede9fe",
+                "#ddd6fe",
+                "#c4b5fd",
+                "#a78bfa",
+                "#fafafa",
+                "#8b5cf6",
+                "#7c3aed",
+                "#6d28d9",
+                "#6130b0",
+                "#8a4ce6",
+                "#3b3348",
+            ),
+        ).set(
+            body_background_fill="*primary_50",
+            body_background_fill_dark="*primary_950",
+            body_text_color_dark="*primary_100",
+            body_text_size="*text_sm",
+            body_text_color_subdued_dark="*primary_100",
+            background_fill_primary="*primary_50",
+            background_fill_primary_dark="*primary_950",
+            background_fill_secondary="*primary_50",
+            background_fill_secondary_dark="*primary_950",
+            border_color_accent="*primary_400",
+            border_color_accent_dark="*primary_900",
+            border_color_primary="*primary_600",
+            border_color_primary_dark="*primary_800",
+            color_accent="*primary_400",
+            color_accent_soft="*primary_300",
+            color_accent_soft_dark="*primary_700",
+            link_text_color="*primary_500",
+            link_text_color_dark="*primary_50",
+            link_text_color_active="*secondary_800",
+            link_text_color_active_dark="*primary_500",
+            link_text_color_hover="*primary_400",
+            link_text_color_hover_dark="*primary_400",
+            link_text_color_visited="*primary_500",
+            link_text_color_visited_dark="*secondary_100",
+            block_background_fill="*primary_50",
+            block_background_fill_dark="*primary_900",
+            block_border_color_dark="*primary_800",
+            checkbox_background_color="*primary_50",
+            checkbox_background_color_dark="*primary_50",
+            checkbox_background_color_focus="*primary_100",
+            checkbox_background_color_focus_dark="*primary_100",
+            checkbox_background_color_hover="*primary_400",
+            checkbox_background_color_hover_dark="*primary_500",
+            checkbox_background_color_selected="*primary_300",
+            checkbox_background_color_selected_dark="*primary_500",
+            checkbox_border_color_dark="*primary_200",
+            checkbox_border_radius="*radius_md",
+            input_background_fill="*primary_50",
+            input_background_fill_dark="*primary_900",
+            input_radius="*radius_xxl",
+            slider_color="*primary_600",
+            slider_color_dark="*primary_700",
+            button_large_radius="*radius_xxl",
+            button_large_text_size="*text_md",
+            button_small_radius="*radius_xxl",
+            button_primary_background_fill_dark="*primary_800",
+            button_primary_background_fill_hover_dark="*primary_700",
+            button_primary_border_color_dark="*primary_800",
+            button_secondary_background_fill="*neutral_200",
+            button_secondary_background_fill_dark="*primary_600",
+        )

src/lightning/version.info

@@ -0,0 +1 @@
+2.1.0dev

tests/integrations_app/public/test_gradio.py

@@ -28,5 +28,5 @@ def predict(self, *args, **kwargs):
     assert comp.model == "model"
     assert comp.predict() == "prediction"
     gradio_mock.Interface.assert_called_once_with(
-        fn=ANY, inputs=ANY, outputs=ANY, examples=ANY, title=None, description=None
+        fn=ANY, inputs=ANY, outputs=ANY, examples=ANY, title=None, description=None, theme=ANY
     )